iOptron ZEQ25GT User Manual

iOptron® ZEQ25GT Balanced GoTo Equatorial Mount

With Go2Nova® 8408 Hand Controller

Instruction Manual

Product #7100, #7101 and #7102

Table of Content

Table of Content.................................................................................................................................................2

1. ZEQ25GT Overview......................................................................................................................................4

2. ZEQ25 Terms.................................................................................................................................................5

2.1. Parts List..................................................................................................................................................5

2.2. Assembly Terms......................................................................................................................................6

2.3. ZEQ25 Ports............................................................................................................................................7

2.4. Go2Nova® 8408 Hand Controller ...........................................................................................................7

2.4.1. Key Description................................................................................................................................8

2.4.2. The LCD Screen...............................................................................................................................8

3. ZEQ25GT Mount Assembly ........................................................................................................................10

3.1. Introduction ...........................................................................................................................................10

3.2. ZEQ25 Mount Assembly.......................................................................................................................10

4. Getting Started..............................................................................................................................................20

4.1. Setup the Mount and Polar Alignment..................................................................................................20

4.2. Manual Operation of the Mount............................................................................................................20

4.3. Initial Star Alignment............................................................................................................................20

4.4. Go to the Moon and Other Stars............................................................................................................20

4.5. Star Identifying Function.......................................................................................................................21

4.6. Turn Off the Mount...............................................................................................................................21

5. Complete Functions of Go2Nova® 8408 Hand Controller...........................................................................22

5.1. Slew to an Object...................................................................................................................................22

5.1.1. Solar System...................................................................................................................................22

5.1.2. Deep Sky Objects...........................................................................................................................22

5.1.3. Stars:...............................................................................................................................................22

5.1.4. Constellations.................................................................................................................................22

5.1.5. Comets............................................................................................................................................22

5.1.6. Asteroids.........................................................................................................................................22

5.1.7. User Objects ...................................................................................................................................23

5.1.8. Enter R.A. DEC..............................................................................................................................23

5.2. Sync to Target........................................................................................................................................23

5.3. Set Up Controller...................................................................................................................................23

5.3.1. Set Up Time & Site ........................................................................................................................23

5.3.2. Set Display and Beep......................................................................................................................23

5.3.3. Set Anti-backlash............................................................................................................................23

5.3.4. Meridian Treatment........................................................................................................................24

5.3.5. Track Below Horizon.....................................................................................................................24

5.3.6. Set Polar Light................................................................................................................................24

5.3.7. Firmware Information ....................................................................................................................24

5.3.8. GPS Status......................................................................................................................................24

5.3.9. Upgrade RA & DEC.......................................................................................................................25

5.4. Align......................................................................................................................................................25

5.4.1. Polar Alignment..............................................................................................................................25

5.4.2. SolarSys Alignment........................................................................................................................25

5.4.3. One-Star Alignment........................................................................................................................25

5.4.4. Multi-Star Alignment .....................................................................................................................25

5.4.5. Pole Star Position ...........................................................................................................................26

5.5. PEC Option............................................................................................................................................26

5.5.1. PEC Playback.................................................................................................................................26

2

5.5.2. Record PEC....................................................................................................................................26

5.6. Set User Objects....................................................................................................................................26

5.7. Set Guide Rate.......................................................................................................................................27

5.8. To Zero Position....................................................................................................................................27

6. Maintenance and Servicing ..........................................................................................................................28

6.1. Maintenance ..........................................................................................................................................28

6.2. iOptron Customer Service.....................................................................................................................28

6.3. Product End of Life Disposal Instructions ............................................................................................28

6.4. Battery Replacement and Disposal Instructions....................................................................................28

Appendix A. Technical Specifications.............................................................................................................29

Appendix B. Go2Nova® 8408 HC MENU STRUCTURE ..............................................................................30

Appendix C. Firmware Upgrade ......................................................................................................................32

Appendix D. Computer Control an ZEQ25GT Mount.....................................................................................33

Appendix E. Go2Nova® Star List.....................................................................................................................34

IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY............................41

WARNING!

NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER!

Looking at or near the Sun will cause instant and irreversible damage to your eye.

Children should always have adult supervision while observing.

Ver. 1.2
iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design/function may differ from those described in this
instruction.

3

1. ZEQ25GT Overview

Welcome to a new type of EQ mount! The iOptron “Z” design mount puts the payload weight at the center of
gravity allowing for greater natural stability. This also means the mount is extremely light compared to its
payload—a nice benefit when setting up at a remote site. Other features include an adjustable
counterweight bar to prevent obstruction with the tripod. And Polar aligning is quick and accessible all the
time since the Polar scope is not blocked by the DEC shaft.

The ZEQ25 is equipped with the most advanced GOTONOVA
most powerful and accurate GOTO mounts available. It comes with over 59,000 objects in its database.
Plus, the Go2Nova

®

Hand Controller is intuitive to use with a large 4-line LCD screen to easily set up your

telescope and select where you want to go. The ZEQ25 – a new category of viewing and astrophotography.

Please read the instruction before operation the mount.

Features:

• A new design “balanced” equatorial mount for maximum payload and minimum mount weight

• Specialized astrophotography mount ideal for entry-level and intermediate Astro-photographers

• Payload of 27 lbs (12.3 kg) with the mount-only weight of 10.4 lbs (4.7 kg)

• Spring loaded gear system with customer adjustable loading force

• Gear switches on both R.A. and DEC axes for easy balancing when disengaged

• Adjustable counterweight shaft for 0º latitude operation

• Dual-axis servomotor with enhanced optical encoder for precise GOTO and accurate tracking

TM

• iOptron AccuAligning
procedure, allowing for fast and accurate polar alignment (model #7100 and 7200)

• Polar alignment routine for those who can’t see the Pole Star

• Go2Nova

®

8408 controller with Advanced GOTONOVA® GOTO Technology

• Periodic error correction (PEC)

• Integrated autoguiding port

• Built-in 32-channel Global Positioning System (GPS)

• Serial port for firmware upgrade and computer control

• Spring loaded Vixen-style saddle

• Standard 1.5 inch heavy-duty stainless steel tripod (5kg), optional 2 inch tripod (8kg)

• Die-cast metal tripod spreader with accessory tray

• Optional PowerWeight

calibrated polar scope with dark-field illumination and easy polar alignment

TM

rechargeable battery pack

®

GOTO technology, making it one of the

DO NOT rock the counterweight shaft rigorously. You’ll degrade  the performance of the spring loaded
gearmeshingsystem,orevendamageit.

The Tension Adjusters are used as the last step to lock, and the first step to release the gears. When
disengaging the gear system, release the Tension Adjuster first. Then turn the Gear Switch to OPEN
position. When engaging the gear system, turn the Gear Switch to LOCK position first. Then tighten the
Tension Adjuster.

Never fully tighten the Tension Adjusters during operations. Fully screw in the Tension Adjuster and
then back out by about 2 turns. The optimum spot varies with actual conditions, but is mostly within 1-3
turns from the fully tightened position. Ideally, it should be at a position just deep enough to rid any free
movements (plays), while force on the worm assembly is kept at a minimum.

4

2. ZEQ25 Terms

2.1. Parts List1

There are two shipping boxes for a regular tripod version. One box contains a ZEQ mount, hand

controller, one 10.4 lbs (4.7kg) counterweight, counterweight shaft, tripod spreader and accessories. The
other box contains a tripod.

• iOptron® ZEQ25GT telescope mount (with built-in GPS)

• Go2Nova

• 1.5-inch Tripod (#7100) or 2-inch Tripod (#7200)

• Tripod spreader

• One 10.4lbs (4.7 kg) counterweight

• Counterweight shaft

• Dark field illuminating LED cable (for model #7100 and #7200 with polar scope)

• AC adapter (100V-240V)

• Controller Cable X 2

• Serial cable (RS232 to RJ9)

ONLINE CONTENTS (click under “Support” menu) www.iOptron.com

• Quick Start Guide

• This manual

• Tips for set up

• Hand controller and mount firmware upgrades (check online for latest version)

• .NET ASCOM driver

• Reviews and feedback from other customers

• Accessories

®

8408 Hand Controller

1

US market only. Actual contents may vary.

5

2.2. Assembly Terms

Polar Axis Cover

Polar Axis Cover

Front CW position screw

Front CW position screw

CW mounting nose

CW mounting nose

CW Locking Screw

CW Locking Screw

R.A. Drive Unit

R.A. Drive Unit

Lat. Locking T-bolt

Lat. Locking T-bolt

Lat. Adj. Knob

Lat. Adj. Knob

Main board

Main board

DEC Drive Unit

DEC Drive Unit

Dovetail Saddle

Dovetail Saddle

Polar Axis (R.A. axis)

Polar Axis (R.A. axis)

CW Bar

CW Bar

Azi. Adj. Knob

Azi. Adj. Knob

Counterweight

Counterweight

CW Safety Screw

CW Safety Screw

Alignment Peg

Alignment Peg

Tripod Leg Lock

Tripod Leg Lock

Polar Scope Cover

Polar Scope Cover

Center Rod Knob

Center Rod Knob

Accessory Tray

Accessory Tray

Tray Locking Knob

Tray Locking Knob

Figure 1. ZEQ25 assembly terms (mount and tripod)

6

2.3. ZEQ25 Ports

Ports on the mount

On main control board:

• OFF/ON Switch: Power switch

• Dec: For connecting to DEC drive unit

• Power DC 12V: DC power plug

• iOptron Port: For connecting to other iOptron accessories, such as a laser pointer or a planetary

dome control.

• HBX (Hand Box): For connecting to an 8408 Hand Controller

• Reticle: Power supply for the polar scope dark field illumination LED, or illuminated eyepiece

DEC Unit R.A. Unit

DEC Unit R.A. Unit

Main Board Main Board

Main Board Main Board

Figure 2. Ports on a ZEQ25 mount

On RA unit:

Guide Port: Autoguiding port for guiding cameras

On DEC unit:

The only port on the DEC unit is used to connect to the Dec port on main control board

2.4. Go2Nova® 8408 Hand Controller

RA+

DEC+
RA-

DEC-

Serial
Port

HBX
Port

Figure 3. Go2Nova® 8408 hand controller

7

The Go2Nova® 8408 hand controller (HC) shown in Figure 3 is the standard controllers that used for

a ZEQ25 mount. It has a 4 line, 21 character large LCD screen, function keys, direction keys and number
keys on the front; a and a HBX port (6-pin) and a serial port (4-pin) at the bottom.

2.4.1. Key Description

• MENU Key: Press “MENU” to enter the Main Menu.

• BACK Key: Move back to the previous screen, or end/cancel current operation, such as slewing.

• ENTER Key: Confirm an input, go to the next menu, select a choice, or slew the telescope to a

selected object.

• Arrow (▲▼◄►) Keys: The arrow keys are used to control the movement of DEC and R.A. axes.
Press and hold ▲(DEC+),▼(DEC-) buttons to move a telescope along the DEC direction,
◄(R.A.+), ►(R.A.-) to move a telescope along the RA direction. They are also used to browse the

menu or move the cursor while in the menu. Holding an arrow key for a fast scrolling.

• Number Keys: Input numerical values. Also used to adjust slewing speeds (1: 1X; 2: 2X; 3: 8X; 4:
16X; 5: 64X; 6: 128X; 7: 256X; 8: 512X; 9: MAX)

• ? Key: Identify and display nearby bright stars or objects where the telescope points to.

• 0 Key: Stop the mount during GOTO. Also toggling between start and stop tracking.

• HBX (Handbox) port: connect the HC to a ZEQ25 mount using a 6 pin 4 wire (6P4C) RJ11 plug.

• Serial port: connect the HC to a Computer via a RS232 to 4 pin 4 wire (4P4C) RJ9 cable (iOptron

item# 8412

). The pin out of the serial port is shown in Figure 4.

Figure 4. Serial port pin out on an 8408 hand controller

2.4.2. The LCD Screen

The 8408 HC has a large 4-line, 21-character per line LCD screen. The user interface is simple and

easy to learn. When the mount first turned on, an initial information screen will be displayed as shown in

Figure 5, after company logo displayed. It displays the Zero Position, current date and time.

Figure 5. 8408 Initial Information Screen

The LCD screen will switch to the information screen, as indicated in Figure 6, with pressing any

button.

8

Target Name

ount Status

p

Right Ascension

Azimuth

M

Magnitude
Declination

Altitude
N/S Hemis

here

Slew Speed

Current Time

Figure 6. 8408 HC LCD Information Screen

1. Target Name/Mount Position: displays the name of the target that telescope is currently pointed to or
the current mount position.

• An object name, such as “Mercury” or “Andromeda Galaxy”: Name of the Star or celestial object
that the mount is currently slewing to, GOTO or tracking;

• User Position: The mount is point to a user defined position, which could be a real sky object or
just simply due to press an arrow key.

2. Magnitude: the magnitude of the current celestial object

3. Right Ascension: Right Ascension of the telescope, or R.A.

4. Declination: Declination of the telescope, or DEC.

5. Azimuth: Azimuth of the telescope (north is 0º, east 90º, south 180º, and west 270º).

6. Altitude: Altitude of the telescope (degrees vertical from the local horizon - zenith is 90º).

7. Mount Status: Display current operation status of the mount.

• Stop: mount is not moving;

• Slew: mount is moving with an arrow key is pressed;

• GoTo: mount is slewing to a celestial object using “Select and Slew”;

8. Slew speed: It has 9 speeds: 1X, 2X, 8X, 16X, 64X, 128X, 256X, 512X, MAX (~4.5º/sec, depends on
power source).

9. Current Time: display local time in a format of HH:MM:SS.

9

3. ZEQ25GT Mount Assembly

3.1. Introduction

You have just purchased a telescope mount that is capable of taking you to a new level of
astronomy. No matter which telescope or optical tube assembly (OTA) you select to install on the mount,
the overall performance will be greatly enhanced. In order for you to get the optimum performance from the
mount and OTA combination, you must assemble and adjust the mount correctly. The following
fundamentals of telescope mounts are included to help you understand the big picture before you get into
the specific details of the ZEQ25 mount.

Telescope mounts are either equatorial mounts or altitude-azimuth (Alt-Az) mounts. Both types of
mounts rotate the OTA around two perpendicular axes to point to a desired object in the night sky. An
equatorial mount has the right ascension (R.A.) axis aligned with the celestial North Pole (CNP), or celestial
South Pole (CSP) in southern hemisphere, to provide rotation matching the celestial sphere rotation around
the Earth and the declination axis (DEC) to provide elevation relative to the celestial equator. Since all
celestial objects appear to rotate around the CNP, the R.A. axis allows the OTA to rotate with the celestial
sphere and provide accurate tracking for visual observations and astrophotography. R.A. is the celestial
equivalent of longitude. Like longitude, R.A. measures an angle that increases toward the East as
measured from a zero reference point on the celestial equator. An Alt-Az mount has a horizontal axis to
provide vertical (altitude) OTA movement from the local horizon and a vertical axis to provide horizontal
(azimuth) OTA movement, similar to compass headings. An Alt-Az mount can provide tracking that is good
enough for visual observing and short exposure photos, but not good enough for serious astrophotography.
Alt-Az mounts require star alignments for the OTA to track stars and they do not have adjustment
components on the mount. Equatorial mounts require alignment of the mount components as well as star
alignments for accurate OTA tracking.

In order to provide the required Polar Axis alignment, equatorial mounts use a combination of both
mount types described above. The adjustable part of the mount moves in the Alt-Az mode in order to align
the R.A. axis, also known as the mount’s Polar Axis, with the CNP. These Polar Axis adjustments do not
involve any rotations of the OTA about the R.A. or DEC axes and can be performed without the OTA
installed. The first step is to make an approximate azimuth alignment of the Polar Axis by aligning the
specified tripod leg or reference point toward True North using a compass for reference (you must allow for
the variation between True and Magnetic North at your location). Precise horizontal alignment of the Polar
Axis is accomplished with azimuth adjustments on the mount. The second step is to adjust the Polar Axis
vertically (altitude) above the North horizon by setting the observer’s latitude on the provided latitude scale.
This procedure is based on the fundamental geometry of the Earth’s coordinate system in conjunction with
the concept of the celestial sphere. You can verify this by visualizing yourself at the North Pole (latitude
N90°) and Polaris will be 90° from the horizon, or directly overhead. These steps will place the Polar Axis
very close to the CNP. Both of the above adjustments can be enhanced by the use of an opening along the
R.A. axis that allows direct viewing of the North Star and the use of a polar scope to view through this
opening. If you are going to get the most out of your equatorial mount it is essential to understand the
concept of the Polar Axis and how the equatorial mount helps you establish and maintain a true Polar Axis
alignment. Now, you are ready to perform star alignments using the equatorial mount’s electronic controller
and enjoy the night sky.

The ZEQ25 mount is a next-generation equatorial mount that provides the precision alignment
capabilities required for today’s complete astronomy solution. The following sections of this manual provide
the detailed steps required to successfully set up and operate the ZEQ25 mount.

3.2. ZEQ25 Mount Assembly

NOTE: The ZEQ25 mount is a precision astronomical instrument. It is highly recommended that you
read the entire manual and become familiar with the nomenclature and function of all components
before starting the assembly.

10

WARNING: Please DO NOT rock the counterweight shaft rigorously. You’ll degrade the performance
of the spring loaded gear meshing system, or even damage it.

WARNING: The new Gear Switch will allow you to have most precise weight balance. This also
means the mount or OTA will swing FREELY when the Gear Switch is disengaged. Always hold the
OTA or mount when release Gear Switch or adjust gear tension.

WARNING: DO NOT fully lock the 2 Tension Adjusters during operations.
NOTE: The mount is shipped with latitude setting at high range (35º ~ 60º). If your site latitude is

lower than 35º, please switch the latitude range before using.

STEP 1. Select Mount Latitude Range

Carefully remove the mount from the shipping box and familiarize yourself with the components
shown in Figure 1.

The mount is by default shipped with the Long Latitude Adjustment Knob installed (for 35-60º). At
lower latitudes of 0-35º, the Short Latitude Adj. Knob needs to be used. To change this knob, remove the

Latitude Locking T-bolts on both sides (do not lose the 4 washers). Unscrew Bottom Post Locking Screw to
free the Bottom Latitude Adj. Post and remove the Latitude Adj. Knob. Thread in evenly

the adequate
Latitude Adj. Knob to Top and Bottom Latitude Adjustment Posts. Reinstall and tighten bottom locking
screw. Lastly, with 4 washers all properly placed, insert and tighten Latitude Locking T-bolts into the upper
threaded holes.

Short Lat. Adj. Knob

Bottom Lat. Adj. Post

Locking Screw

Level Bubble

Lat. Locking T-bolt

Long Lat. Adj. Knob

Azi. Adj. Knob

Latitude Indicator

For Low Latitude

For High Latitude

(a)

(b)

Figure 7. Switching latitude adjustment knob

STEP 2. Tripod Setup

Expand the tripod legs. Adjust the tripod height by unlocking and re-locking the Tripod Leg Locks to
desired height. Position the tripod so that the Alignment Peg faces north, if you are located at northern
hemisphere. If you are located in southern half, face the Alignment Peg south. Thread the tripod center rod
into the tripod head and install the Accessory Tray and tread the Tray Locking Knob onto it. Do not fully
tighten the Tray Locking Knob.

There are two threaded holes on the tripod head for alignment peg installation. The Alignment Peg

may be moved to the opposite position shall the mount hit the tripod leg when used at a high latitude.

11

Alignment Peg

Figure 8. Set up tripod

STEP 3. Attach the ZEQ25 Mount

Retract both Azimuth Adj. Knobs to allow enough clearance inside
the chamber. Position the mount on the tripod head with the Alignment
Peg in between the 2 Azimuth Adj. Knobs. Thread the Center Rod into
mount to secure it with tripod. Tighten the Tray Locking Knob to fully
spread the tripod legs. Adjust the tripod legs to level the mount using the
Level Bubble.

STEP 4. Adjust Latitude

Center Rod Knob

Accessory Tray

Tray Locking Knob

Azi. Adj. Knob

Alignment Peg

This step requires you to know the latitude of your current location.
This can be found from your 8408 hand controller after the embedded
GPS receives the signal from the satellites. It also can be easily found on

Figure 9. Attach a mount

the Internet, with your GPS navigator or a GPS capable cell phone. You
will have to change this latitude setting every time you significantly change your night sky viewing location.
This setting directly affects the mount’s tracking and GOTO accuracy.

Slightly loosen the Latitude Locking T-bolts. Turn Latitude Adjust Knob to adjust the latitude until the
arrow points to your current latitude on the Latitude Indicator (see Figure 7b). Relock the Latitude Locking
T-bolts. At this point, with the mount leveled and pointed north, and the latitude set, the Polar Axis (R.A. axis)
should be pointing very close to the NCP and Polaris. This alignment accuracy will be sufficient for visual
tracking and short duration piggy-back (camera mounted on top of the OTA) astrophotography.

STEP 5. Install Counterweight (CW) Shaft

CW Mounting Nose

(1)

(1)

CW Mounting Nose

Front CW Position Screw

Front CW Position Screw

(3)

(3)

(2)

(2)

CW Shaft Locking Screw

CW Shaft Locking Screw

Figure 10. Install counterweight shaft

12

(1) Remove CW Shaft Locking Screw from the CW Mounting Nose.

(2) Insert CW shaft into the CW Mounting Nose as indicated in 2nd photo below.

(3) Lock it using CW Shaft Locking Screw from the other side of the CW Mounting Nose. Tighten the

Front CW Positioning Screw which is located in front of the CW Mounting Nose.

If the latitude of the observation location is lower than 10º, thread in the Rear CW Position Screw (a
hex head set screw) before tightening the Front CW Positioning Screw to avoid CW hit tripod legs. Then
tighten the Front CW Positioning Screw.

CW Locking Screw

CW Bar

Counterweight

Rear CW Position Screw

Figure 11. Tilt counterweight shaft for low altitude

Figure 12. Install counterweight

CW Safety Screw

STEP 6. Install Counterweight

Remove CW Safety Cap at the end of CW Shaft. With the wider opening towards the shaft end,
guide CW through the shaft. Use the CW Locking Screw to hold the CW in place. Place Safety Cap back
onto the shaft. ZEQ25 comes with a 10.4 lbs (4.7kg) counterweight. It should be able to balance a total
payload of about 13 lbs (6kg) for a 6” diameter telescope. An optional CW or extension bar is needed for a
heavier payload or a larger diameter Telescope.

STEP 7 Attach and Balance an OTA on the Mount Connect Cables

After attaching an OTA and accessories to the mount, the ZEQ25 mount must be balanced in both
R.A. and DEC axes to ensure minimum stress on the mount (such as gears and motors inside).

CAUTION: The telescope may swing freely when the R.A. or DEC Gear Switch is released. Always
hold on to the OTA before you release the gear switch to prevent it from swinging. It can cause
personal injury or damage to the equipment.

Release Tension Adjuster by turning it counterclockwise. Turn Gear Switch knob 90 degree to
OPEN position to disengage the worm from the worm wheel.

Tension Adjusters

Gear Switch

OPENLOCK

Figure 13. Gear Switch operation

13

Rotate the DEC axis to horizontal position. Adjust the CW position to balance the mount in R.A. axis
(Figure 14a) and move the OTA position to balance the mount along DEC axis (Figure 14b).

(a) (b)

Figure 14. Balance along R.A. axis (a) and DEC axis (b)

CAUTION: The balance process MUST be done with Gear Switch at OPEN position! Otherwise it
might damage the worm system.

Return the mount to Zero Position after balance, i.e. the CW shaft points to ground and telescope is
at the highest position.

Turn Gear Switch Knob by 90° to LOCK position to re-engage the worm to the worm wheel.
Retighten the Tension Adjuster as the last step to lock the gear.

Important Notes on Tension Adjusters

The rule of thumb is to fully screw in the Tension Adjuster and then back out by about 2 turns. The
optimum spot varies with actual conditions, but is mostly within 1-3 turns from the fully tightened
position. Ideally, it should be at a position just deep enough to rid any free movements (plays), while
force on the worm assembly is kept at a minimum.

STEP 8. Connect Cables

Connect DEC unit to the main control unit with a short, straight RJ11 cable. Connect the Go2Nova
8408 hand controller to the HC port on the main unit. Plug 12V DC power supply into the POWER socket.
The power indicator on the main unit will be on when the power switch is turned on.

STEP 9. Setup Hand Controller

The ZEQ25 is equipped with a GPS receiver, which will
receive the time, longitude and latitude information from
satellites after the link is established. However, there are still
some parameters need to be entered to reflect your location,
such as time zone info and daylight saving time. The
information will be stored inside the hand controller memory
along with longitude and latitude coordinates until they need to
be changed.

®

A clear sky and open space outside is needed for the
GPS to establish its link with the satellites. The GPS is
installed inside main control board compartment. If it has
difficulty to receive the GPS signal, you may turn the mount
head 90º to the side of the mount to clear the space on top of
the main board.

14

Figure 15. Rotate mount head 90º to

clear the space for GPS receiver

To set up the controller, press MENU button on the hand controller. From the main menu, scroll

down and select “Set Up Controller”

Select and Slew
Sync. to Target
Set Up Controller
Align

Press ENTER and select “Set Up Time and Site”

Set Up Time and Site
Set Display and Beep
Set Anti-backlash
Meridian Treatment

Press ENTER. A time and site information screen will be displayed:

2013-04-01 12:01:36 N
300 Min. behind UT
W071d08m50s
N42d30m32s Northern

Set Local Time

The time will be updated automatically when the GPS has picked up a signal. You also can manually
input the time information in case GPS does not function. Use the ◄ or ► key to move the cursor _ and use
number keys to change the numbers. Use the ▲ or ▼ button to toggle between “Y” and “N” for Daylight
Saving Time. Hold the arrow key to fast forward or rewind the cursor.

In order to make hand control reflect your correct local time, time zone information has to be entered.
Press ◄ or ► key, move the cursor to the third line “300 Min. behind UT” to set the time zone information
(add or subtract 60 minutes per time zone). Enter minutes “ahead of” or “behind” UT (universal time). For
Example,

• Boston is 300 minutes “behind” UT

• Los Angeles is 480 minutes “behind” UT

• Rome is 60 minutes “ahead of” UT

• Beijing is 480 minutes “ahead of” UT

• Sydney is 600 minutes “ahead of” UT

All the time zones in North America are behind UT, as shown in the following table. So make sure it
shows “behind” instead of “ahead of” UT.

Time Zone Hawaii Alaska Pacific Mountain Central Eastern

Hour behind UT -10 -9 -8 -7 -6 -5

Enter Minutes 600 540 480 420 360 300

To adjust minutes, move the cursor to each digit and use the number keys to input number directly.
To change the “behind” or “ahead of” UT, move the cursor to “ahead” and using ▲ or ▼ key to toggle
between “behind” and “ahead of”. When the number is correct, press ENTER and go back to the previous
screen.

For other parts of the world you can find your “time zone” information from iOptron website
(http://www.ioptron.com/support.cfm?module=faq#). DO NOT COUNT DAYLIGHT SAVING TIME. Fraction
time zone can be entered.

15

Set Observation Site Coordinate

The third and fourth lines display the longitude and latitude coordinates, respectively. The longitude
and latitude coordinates will be automatically updated when the GPS picks up satellite signals. “W/E”
means western/eastern hemisphere; “N/S” means northern/southern hemisphere; “d” means degree; “m”
means minute; and “s” means second.

If for any reason your GPS can’t pick up a signal, you can manually enter the GPS coordinates.
Press ◄ or ► key to move the cursor and using ▲ or ▼ key to toggle between “W” and “E”, “N” and “S”,
using number key to change the numbers. It is always a good idea to do your home work to get the GPS
coordinates before traveling to a new observation site.

The site coordinates information can be found from Support section in iOptron website, under
Controller Set-up (http://www.ioptron.com/support.cfm?module=faq#). By entering the city name or address,
you can find its latitude and longitude. In case you only find the site information in decimal format you can
convert them into d:m:s format by multiplying the decimal numbers by 60. For example, N47.53 can be
changed to N47º31'48”: 47.53º = 47º +0.53º, 0.53º=0.53x60'=31.8', 0.8'=0.8x60"=48". Therefore,

47.53º=47º31'48" or 47d31m48s.

Select N/S Hemisphere

If the polar axis is aligned to North Celestial Pole, then set the mount to Northern Hemisphere. If the
polar axis is pointing to South Celestial Pole, set the mount to Southern Hemisphere. Press ◄ or ► key to
move the cursor and using ▲ or ▼ key to toggle between “Northern Hemisphere” and “Southern
Hemisphere”.

Select Northern Hemisphere if you are located in US and press ENTER to go back to the main menu.

The time and site information will be stored inside the HC memory chip. If you are not traveling to
another observation site, they do not need to be changed.

STEP 10. Polar Alignment

One of ZEQ25’s unique features is that the polar scope can be accessed at anytime. It will not be
blocked by DEC axle as in a German equatorial mount. This makes it possible to adjust the polar alignment
during the tracking.

In order for an equatorial mount to track properly, it has to be accurately polar aligned.

Polar Axis Cover

Lat. Locking T-bolt

Polar Axis (R.A. axis)

Lat. Adj. Knob

Azi. Adj. Knob

Polar Scope Cover

Figure 16. Polar alignment

16

If a ZEQ25GT mount equipped with an iOptron’s AccuAligningTM polar scope, you can do a fast and

accurate polar axis alignment with iOptron’s Quick Polar Alignment procedure.

Figure 17. Polar Scope

Figure 18. Polar Scope LED

Polar Scope LED

As indicated in Figure 17, the Polar Scope Dial has been divided into 12 hours along the angular
direction with half-hour tics. There are 2 groups, 6 concentric circles marked from 36’ to 44’ and 60’ to 70’,
respectively. The 36’ to 44’ concentric circles are used for polar alignment in northern hemisphere using
Polaris. While the 60’ to 70’ circles are used for polar alignment in southern hemisphere using Sigma
Octantis.

Quick Polar Alignment

(1) Level the ZEQ25 mount and set it at Zero Position. Make sure the telescope is parallel to the pole

axis (R.A. axis) of the mount. If a finder scope is used, adjust it to be parallel to the telescope
optical axis. Take off the Polar Axis Cover and Polar Scope Cover.

(2) Connect polar scope LED cable between Reticle plug located on the main unit and the LED socket

at the bottom of the DEC axle, as shown in Figure 18. The light intensity can be adjusted using the

HC via “Set Polar Scope Light” function under “Set Up Controller” menu.

(3) Turn on the mount power by pressing the On/Off switch on the main unit. Make sure that the time

and site information of the hand controller is correct. Press the MENU button, then select “Align”
and “Pole Star Position” to display the current Polaris position. For example, on May 30, 2010,

20:00:00 in Boston, United States (Lat N42º30’32” and Long W71º08’50”, 300 min behind UT,
DST set to Y), the Polaris Position is 1hr 26.8m and r = 41.5m, as shown in Figure 19 (a).

(4) Look through the polar scope to find the Polaris. Using Azimuth Adjustment Knob and Latitude

Adjustment Knob to adjust the mount in altitude and azimuth directions and put the Polaris in the
same position on the Polar Scope Dial as indicated on the HC LCD. In this case, the Polaris will be
located at a radius of 41.5’ and an angle of 1 hour 26.8 minute, as shown in Figure 19 (b).

(a) (b)

Figure 19. Polaris Position shown on HC (a) and where to put on polar scope dial (b)

17

NOTE: If you are located in southern hemisphere, Sigma Octantis will be chosen for Polar Alignment.
For example, on May 20, 2010, 20:00:00 in Sydney, Australia (Lat S33º51’36” and Long E151º12’40”),
600 min ahead of UT, the Sigma Octantis Position is 1hr21.8m and 64.4m.

BrightStar Polar Alignment

For those who do not have a polar scope, take off the Polar Axis Cover and Polar Scope Cover.
Look through the polar scope opening to locate the Polaris. Slightly turn tripod Center Rod Knob to loosen
the mount head. Adjust the Azimuth Adjustment Knobs to do a fine adjustment of the mount to center the
pole star in the azimuth direction. Tighten the Center Rod Knob to secure the mount. Slightly loosen two
Latitude Locking T-bolts on the side of the mount, turning the Latitude Adjustment Knob to adjust the

latitude (altitude). Re-tighten the locking screws. Use the BrightStar Polar Alignment procedure below to

further align the mount.

If the mount is not equipped with a polar scope or the pole star cannot be seen, you can use this
BrightStar Polar Alignment procedure.

(1) Level the ZEQ25 mount and set it at Zero Position. Make sure the telescope is parallel to the

pole axis (R.A. axis) of the mount. If a finder scope is used, adjust it to be parallel to the
telescope optical axis. Turn the mount power on. Set correct R.A. and DEC backlash numbers.
An eyepiece with cross hairs is recommended.

(2) Pressing the MENU button, then select “Align” and “Polar Align”. The HC will display the

azimuth and altitude position of several bright stars near meridian. Select one that is visible with
high altitude as Alignment Star A. Follow the HC instruction to move the Star A to the center of
the eyepiece with the combination of Latitude Adjustment Knob and “◄” or “►” button. Press
ENTER to confirm. Next, select a bright star that is close to the horizon as the Alignment Star B.
Center it using the Azimuth Adjustment Knob and “◄” or “►” button (The “▲” and “▼” buttons
are not used here). Press ENTER to confirm.

(3) The telescope will now slew back to Star A to repeat above steps. The iteration can be stopped

when it is determined that the alignment error is at the minimum. Press BACK button to exit

alignment procedure.

NOTE: It is highly recommended to use an eyepiece with crossed-hair line for accurate centering.

NOTE: The movement of the alignment star in your eyepiece may not be perpendicular but crossed,

depends on its location in the sky.

STEP 11. Return Mount to Zero Position

After polar alignment and balancing OTA, return the mount to Zero Position, as shown in Figure 20.
The Zero Position is the position with the CW shaft pointing toward the ground, OTA at the highest position
with its axis parallel to the polar axis and the OTA pointing to the CP. Loosen the DEC and R.A. Gear

Switches to adjust the mount to the Zero Position. Engage the clutches after each adjustment. Remember,
the hand controller needs to be at the Zero Position as well! The simplest way is turn the mount power

OFF and ON again to reset the hand controller.

18

Figure 20. Zero position

19

4. Getting Started

In order to experience the full GOTO capability of GOTONOVA® technology it is very important to set
up the mount correctly before observation.

4.1. Setup the Mount and Polar Alignment

Assemble your ZEQ25 mount according to Section 3.2. Turn the mount power switch on. When the
GPS receiver is connected to satellites, LCD will display GPS OK. The mount will have correct time and site
information. You can also enter them manually as described before. Mount an OTA and accessories, and

carefully balance the mount around the polar axis. Polar align you mount using either Quick Polar
Alignment or BrightStar Polar Alignment Procedure.

The default position for the mount is the Zero Position, when the mount is powered on: the
counterweight shaft is pointing to ground, telescope is at the highest position with its axis parallel to the
polar axis and the telescope is pointing to the North Celestial Pole, if you are located in northern
hemisphere.

4.2. Manual Operation of the Mount

You may observe astronomical objects using the arrow keys of a Go2Nova® hand controller.

Flip the I/O switch on the telescope mount to turn on the mount. Use ►,◄,▼ or ▲ buttons to point

the telescope to the desired object. Use the number keys to change the slewing speed. Then press STOP/0

button to start tracking.

4.3. Initial Star Alignment

Perform a simple one star alignment/synchronization after set up the hand controller to correct any
pointing discrepancy of the Zero Position and to improve the GOTO accuracy.

To perform “One Star Align,” press MENU button, scroll down to “Align”, select “One Star Align”

and press ENTER. The screen will display a list of bright objects for you to select from. Select an object
using ▲ or ▼ key. Then press ENTER. After the mount slews to the target, use the arrow keys to center it
in your eyepiece. Then press ENTER. (More align details in 5.4)

An alternate way is to perform “Sync to Target.” Press the MENU button, select “Select and Slew”
and press ENTER. Browse over the catalogs and select an object, such as “Stars” Æ“Named stars” Æ140
(Polaris), and press ENTER. After the mount slews to Polaris, press the MENU button, scroll down to
“Sync. To Target”, follow the on-screen instruction to center Polaris and press ENTER. You may need to

use the number keys to change the slewing speed to make the centering procedure easier.

4.4. Go to the Moon and Other Stars

After performing these set-ups the mount is ready to GOTO and track objects. One of the most
common objects is the Moon.

To slew to the Moon press the MENU button. Select “Select and Slew” by pressing the ENTER
button. Select “Solar System”, and use the ▲ or ▼ buttons to select Moon. Press ENTER. The telescope

will automatically slew to the Moon and lock on it. It will automatically begin to track once it locks on. If the
Moon is not centered in your eyepiece, use the arrow keys to center the Moon. Or for better performance

use “Sync to Target.”

You may also select other bright celestial objects to start with, such as Jupiter or Saturn.

20

4.5. Star Identifying Function

The 8408 hand controller has a star identifying function. After Polar Alignment and Set Up Time
and Site, slew the telescope to an bright star, manually or using GOTO. Press ? (Help) button to identify

the star name telescope is pointing to, as well as nearby bright stars if there are any.

4.6. Gear Tension Adjustment

Never fully tighten them during operations. The rule of thumb is to fully screw in the Tension Adjuster
and then back out by about 2 turns. The optimum spot varies with actual conditions, but is mostly within 1-3
turns from the fully tightened position. Ideally, it should be at a position just deep enough to rid any free
movements (plays), while force on the worm assembly is kept at a minimum.

4.7. Turn Off the Mount

When you have finished your observation, just simply turn the mount power off and disassemble the
mount and tripod. If the mount is set up on a pier or inside an observatory, it is recommended that you
return the mount to Zero Position. This will ensure that there is no need for you to perform the initial setup
again when you power up the mount subsequently, if the mount is not moved. To return the mount to its

Zero Position, press the MENU button, scroll down to “To Zero Position” and press ENTER. Once the

telescope returns to Zero Position turn the power off.

21

5. Complete Functions of Go2Nova® 8408 Hand Controller

5.1. Slew to an Object

Press the MENU button. From the main menu select “Select and Slew.” Select an object that you

would like to observe and press the ENTER key.

®

The Go2Nova
buttons to move the cursor. Use the number buttons to enter the number, or the ▼ or ▲ buttons to change
the individual number. Hold on a button to fast scroll through the list. The “

the horizon, and a cross mark “
horizon will not display on the hand controller.

5.1.1. Solar System

There are 9 objects in the Solar system catalog.

5.1.2. Deep Sky Objects

This menu includes objects outside our Solar system such as galaxies, star clusters, quasars, and
nebulae.

• Named Objects: consists of 60 deep sky objects with their common names. A list of named deep
sky objects is included in Appendix E.

• Messier Catalog: consists of all 110 Messier objects.

8408 hand controller has a database of about 50,000 objects. Use the ► or ◄

” indicates the object is above

” means it is below the horizon. In some catalogs those stars below the

• NGC IC Catalog: consists of 7,840 objects in NGC catalog and 5,386 objects in IC catalog. To
select an object from NGC or IC catalog, move the cursor to NGC, using▲ or ▼ button to toggle
between NGC and IC. Then move the cursor to a numerical position and use the number button
to select the object.

• UGC Catalog: consists of 12,921 objects.

• Caldwell Catalog: consists of 109 objects.

• Herschel Catalog: consists of 400 objects.

5.1.3. Stars:

• Named Stars: consists of 195 stars with their common names. They are listed alphabetically. A
list is included in Appendix E.

• Binary Stars: consists of 210 binary stars. A list is attached in Appendix E.

• GCVS: consists of 5,553 bright variable stars in the catalog.

• SAO Catalog: consists of 26,584 bright SAO catalog objects. They are listed numerically.

5.1.4. Constellations

This catalog consists of 88 modern constellations with their names. They are listed alphabetically. A

list is attached in Appendix E.

5.1.5. Comets

This catalog contains 15 comets.

5.1.6. Asteroids

This catalog contains 116 asteroids.

22

5.1.7. User Objects

It can store up to 60 used entered objects, including comets.

5.1.8. Enter R.A. DEC

Here you can go to a target by entering its R.A. and DEC numbers.

5.2. Sync to Target

This operation will match the telescope's current coordinates to Target Right Ascension and

Declination. After slewing to an object, press MENU—then scroll to “Sync to Target” and press ENTER.

Follow the screen to do the sync. Using this function will re-calibrate the computer to the selected object.
Multiple syncs can be performed if needed. This operation is most useful to find a faint star or nebula near a
bright star.

“Sync to Target” will only work after “Select and Slew” is performed. You can change the slewing

speed to make the centering procedure easier. Simply press a number (1 through 9) to change the speed.
The default slew speed is 64X.

“Sync to Target” does the same thing as one star alignment except that you choose the object to

“sync” to. “One star align” chooses the star/object for you.

5.3. Set Up Controller

5.3.1. Set Up Time & Site

Refer to STEP 9 in Section 3.2.

5.3.2. Set Display and Beep

Press MENU button, from the main menu, scroll down and select “Set Up Controller”. Press

ENTER and select “Set Display and Beep”:

Set Up Time and Site
Set Display and Beep
Set Anti-backlash
Meridian Treatment

Use arrow keys to adjust LCD display contrast, LCD backlight intensity, keypads backlight Intensity

and turn the keep beep ON/OFF

5.3.3. Set Anti-backlash

All mechanical gears have a certain amount of backlash or play between the gears. This play is
evident by how long it takes for a star to move in the eyepiece when the hand control arrow buttons are
pressed (especially when changing directions). The Go2Nova anti-backlash feature allows user to
compensate for backlash by inputting a value which quickly rewinds the motors just enough to eliminate the
play between gears.

To set the anti-backlash value, scroll down and select “Set Anti-backlash”

23

Set Up Time and Site
Set Display and Beep
Set Anti-backlash
Meridian Treatment

Press ENTER. A R.A. anti-backlash screen will display:

R.A. anti-backlash:

0000 steps

One step equals to

0.14 arc second.

To adjust steps move the cursor to each digit and use the number keys to input number directly.
Press ENTER – “DEC anti-backlash” will display:

DEC anti-backlash:

0000 steps

One step equals to

0.14 arc second.

Move the cursor to each digit and use the number keys to set the anti-backlash. Press ENTER to go
back the previous screen. Press BACK button to go back to main menu.

While viewing an object in the eyepiece, observe the responsiveness of each of the four arrow
buttons. Note which directions you see a pause in the star movement after the button has been pressed.
Working one axis at a time, adjust the backlash settings high enough to cause immediate movement without
resulting in a pronounced jump when pressing or releasing the button. The hand controller will remember
these values and use them each time it is turned on until they are changed.

5.3.4. Meridian Treatment

This function tells mount what to do when it tracks across the meridian. There are three options.
Stop Tracking will stop the mount when it passes the meridian. Telescope Flip will flip the telescope and
continuous to track the object. The third option is Continue to Track. In this case, the mount will keep
tracking and the OTA could hit the tripod leg if the mount is not monitored.

5.3.5. Track Below Horizon

This function allows mount to keep tracking an object even it is below horizon but still can be seen
from an elevated observation site, such as at a hill. The power on default is at OFF state. One can turn it on
when needed.

5.3.6. Set Polar Light

Use this function to adjust the light intensity of ZEQ25GT illuminated polar scope. If you have an
illuminated-reticule eyepiece and has the same socket size, you may use this option to adjust its light
intensity.

5.3.7. Firmware Information

This option will display firmware version information of hand controller, R.A. control board and DEC
control board.

5.3.8. GPS Status

Check GPS status. After the GPS connected to satellites, the status will changed to OK.

24

5.3.9. Upgrade RA & DEC

Use this operation to upgrade 8408 hand controller, R.A. and DEC motor controller firmware. Please

refer to iOptron online documents for ZEQ25 firmware upgrade details. The password is 9999.

5.4. Align

This function is used for aligning the telescope. The hand controller provides “Polar Align”, which
uses a set of 2 bright stars for polar alignment. This provides a viable polar alignment approach for those
who can’t see the polar star or has a mount does not equip an iOptron AccuAlign
also provides three alignment methods: “SolarSys Align”, “One Star Align”, and “Multi-Star Align”. The
mount has to be at Zero Position before performing any star alignment.

5.4.1. Polar Alignment

Press the MENU button, then select “Align” and “Polar Align”. The HC will display the azimuth and

altitude position of several bright stars near meridian. Select one that is visible with high altitude as
Alignment Star A. Follow the HC instruction to move the Star A to the center of the eyepiece with the
combination of Latitude Adjustment Knob and “◄” or “►” button. Press ENTER to confirm. Next, select a
bright star that is close to the horizon as the Alignment Star B. Center it using the Azimuth Adjustment Knob
and “◄” or “►” button (The “

The telescope will now slew back to Star A to repeat above steps. The iteration can be stopped
when it is determined that the alignment error is at the minimum. Press BACK button to exit alignment
procedure.

▲”

and “

▼”

buttons are not used here). Press ENTER to confirm.

TM

polar scope. The system

NOTE: It is highly recommended to use an eyepiece with crossed-hair line for accurate centering.

NOTE: The movement of the alignment star in your eyepiece may not be perpendicular but crossed,
depends on its location in the sky.

5.4.2. SolarSys Alignment

Press MENU button and select “Align”. Select “SolarSys Align” and press ENTER for available

alignment object.

5.4.3. One-Star Alignment

Press MENU button and select “Align”. Select “One Star Align” and press ENTER. A list of

alignment stars that are above the horizon is computed based on your local time and location. With the
mount at the “Zero Position,” use ▲ and ▼ buttons to select a star and press ENTER. Center the target in
your eyepiece using arrow key. Press ENTER when finished. If your mount is well set up and polar aligned,
one star alignment should be sufficient for good GOTO accuracy. To increase the accuracy you may
choose to do multi star alignment.

5.4.4. Multi-Star Alignment

With iOptron’s multi-star alignment, you can choose two, three, or as many stars as you want to
reduce the mount alignment offset.

Press MENU button and select “Align”. Select “Multi-Star Align” in the align menu. A list of

alignment stars that are above the horizon is computed based on your local time and location. With the
mount is at the “Zero Position,” use ▲ and ▼ buttons to select first alignment star and press ENTER.
Center the target in your eyepiece using arrow key. Press ENTER when finished. The hand controller will
prompt you to choose the second star. If the star you choose is too close to the first one, the system will let
you choose another one. When you are aligned with the second star, the two star alignment is finished. You
can reject the suggested star if it is blocked by a tree or other obstruction.

25

If you’ve done with the two star alignment, press the BACK button to finish the alignment. Press
ENTER key to select third star for further alignment.

5.4.5. Pole Star Position

This shows Polaris position in northern hemisphere or Sigma Octantis position in southern
hemisphere, which is used for Quick Polar Alignment.

5.5. PEC Option

5.5.1. PEC Playback

You can turn “PEC Playback On” while you do the tracking, especially for long time astro-

photography. The default status is PEC Playback Off when the mount is turned on.

5.5.2. Record PEC

All Equatorial mounts have a small variation in the worm gears which can be corrected by using
Period Error Correction or PEC. PEC is a system which improves the tracking accuracy of the mount by
compensating for variations in the worm gear and is especially useful when doing astrophotography without
autoguiding. Because the variations are regular, it is possible to record the corrections required to cancel
out the worm gear variations and to play them back.

In order to use the PEC function, the Go2Nova hand controller needs to record the PE first. The
periodic error of the worm gear drive will be used to correct periodic error. The data will be lost when the
power is turned off.

Here’s how to use the PEC function.

1. Setup the mount with a telescope in autoguiding condition by connecting a guiding camera to a

computer via mount’s Guide Port or ASCOM protocol;

2. Press MENU, select “Auto Guide” and press ENTER. Select a guiding speed from 0.20X to

1.00X;

3. Then press the BACK button and select “PEC Option” from the menu. Use the ▲ and ▼ scroll

buttons to display the “Record PEC” option and press ENTER to start record the PE.

4. It takes the worm gear 600 seconds to make one complete revolution. After 600 seconds PEC will

automatically stop recording.

5. The data will be lost when the power is turned off.

5.6. Set User Objects

Besides various star lists available in the hand controller --you can add, edit or delete your own user­defined objects. You can also add your favorite observation object into the user object list for easy sky
surfing. Up to 60 user objects can be stored here.

To set user objects, press MENU button, from the main menu, scroll down and select “Set User
Objects”.

Set Up Controller
Align
PEC Option
Set User Objects

26

Press ENTER to bring up user objects setting screen.

Add a New Record
Browse Records
Delete One Record
Delete All Records

Select “Add a New Record”. A screen will display asking to Enter R.A. DEC:

Enter R.A. DEC
R.A.: 00h00m00s
DEC: +00d00m00s

You may enter the R.A. and DEC coordinates of the star you want to watch, and press ENTER. A
confirmation screen will show. Press ENTER to confirm storing your object under assigned user object
number, or press BACK button to cancel it.

A more useful application of this function is to store your favorite viewing objects before heading to

the filed. When “Enter R.A. DEC” screen showed, press the MENU button. It brings up the star catalogs

that you can select the star from. Follow the screen to add your favorite objects. Press BACK button to go
back one level.

Press BACK button few times to go back to Set User Objects. You may review the records or

delete the ones you don’t want it anymore. Press BACK button to finish the operation. Now you can slew to

your favorite stars from User Objects catalog using “Select and Slew.”

5.7. Set Guide Rate

This is an advanced function for autoguiding when a guiding camera is equipped either via a Guide
Port or an ASCOM protocol. Before autoguiding, align the polar axis carefully. Select a proper guiding
speed. The suppositional guiding speed can be selected from ±0.20X to ±1.00X. Follow the autoguiding
software for detailed operation.

5.8. To Zero Position

This moves your telescope to its Zero Position. When the power is turned on, the mount assumes
the Zero Position. This is its reference point for alignment and go to functions.

27

6. Maintenance and Servicing

6.1. Maintenance

The ZEQ25GT is designed to be maintenance free. Do not overload the mount. Do not drop the
mount, this will damage the mount or degrade the GOTO tracking accuracy permanently. Use a wet cloth to
clean the mount and hand controller. Do not use solvent.

If your mount is not to be used for an extended period, dismount the OTAs and counterweight(s).

6.2. iOptron Customer Service

If you have any question concerning your ZEQ25 contact iOptron Customer Service Department.
Customer Service hours are 9:00 AM to 5:00 PM, Eastern Time, Monday through Friday. In the unlikely
event that the ZEQ25 requires factory servicing or repairing, write or call iOptron Customer Service
Department first to receive an RMA# before returning the mount to the factory. Please provide details as to
the nature of the problem as well as your name, address, e-mail address, purchase info and daytime
telephone number. We have found that most problems can be resolved by e-mails or telephone calls. So
please contact iOptron first to avoid returning the mount for repair.

It is strongly suggested that to send technical questions to [e-mail]

1.781.569.0200.

6.3. Product End of Life Disposal Instructions

This electronic product is subject to disposal and recycling regulations that vary by
country and region. It is your responsibility to recycle your electronic equipment per your local
environmental laws and regulations to ensure that it will be recycled in a manner that protects
human health and the environment. To find out where you can drop off your waste equipment
for recycling, please contact your local waste recycle/disposal service or the product
representative.

6.4. Battery Replacement and Disposal Instructions

Battery Disposal- Batteries contain chemicals that, if released, may affect the
environment and human health. Batteries should be collected separately for recycling, and
recycled at a local hazardous material disposal location adhering to your country and local
government regulations. To find out where you can drop off your waste battery for recycling,
please contact your local waste disposal service or the product representative.

. Call in the U.S.

28

Appendix A. Technical Specifications

Mount “Z Balanced” Equatorial Mount

Payload 27 lb (12.3kg), exclude counterweight

Mount weight 10.4 lb (4.7kg)

Payload/Mount weight 2.60

Right Ascension worm wheel Φ88mm, 144 teeth aluminum

Declination worm wheel Φ88mm, 144 teeth aluminum

Right Ascension axis shaft Φ35mm steel

Declination axis shaft Φ35mm steel

Right Ascension bearing Φ55mm ball bearing

Declination bearing Φ55mm ball bearing

Worm gears Brass

Motor drive Planetary Gear Reducer DC servo with encoder

Resolution 0.14 arc seconds

Transmission Synchronous belt/Gear

Latitude adjustment range 0º ~ 60º

Azimuth adjustment range ± 10º

GPS Internal 32-channel GPS

Polar Scope AccuAligningTM dark field illuminated

Level indicator Level bubble

Hand Controller Go2Nova® 8408 with 59,000 objects database

PEC PEC

Tracking Automatic

Speed

Counterweight shaft Φ20mm

Counterweight 10.4 lb (4.7kg)

Tripod 1.5" Stainless Steel(5kg), optional 2"(8kg)

Dovetail saddle Spring loaded Vixen-style

Power consumption 0.2A(Tracking), 0.7A(GOTO)

Power requirement 12V DC(9 ~ 15V), 1.5Amp

AC adapter 100V ~ 240V (included)

Serial port Yes (on hand controller)

Autoguide port Yes

Firmware upgrade Yes

PC computer control Yes (ASCOM)

Operation temperature -10ºC ~ 40ºC

Warranty Two year limited

1×,2×,8×,16×,64×,128×,256×,512×,MAX(~4.5º/sec)

29

Appendix B. Go2Nova® 8408 HC MENU STRUCTURE

MENU

Select and SlewSelect and Slew

Solar SystemSolar System

Deep Sky ObjectsDeep Sky Objects

Mercury

Mercury

Venus

Venus

Mars

Mars

Jupiter

Jupiter

Saturn

Saturn

Uranus

Uranus

Neptune

Neptune

Sun

Sun

Moon

Moon

Named Object

Named Object

Messier Catalog

Messier Catalog

Sync. To TargetSync. To Target

StarsStars

ConstellationsConstellations

CometsComets

AsteroidsAsteroids

User ObjectsUser Objects

Enter R.A. and DECEnter R.A. and DEC

NGC IC Catalog

NGC IC Catalog

UGC Catalog

UGC Catalog

Caldwell Catalog

Caldwell Catalog

Herschel Catalog

Herschel Catalog

Named Stars

Binary Stars

GCVSGCVS

SAO CatalogSAO Catalog

Set Up ControllerSet Up Controller

Set up Time & Site

Set Display & BeepSet Display & Beep

Set Anti-backlashSet Anti-backlash

Meridian TreatmentMeridian Treatment

30

Track Below horizon

Set Polar Light

Firmware InformationFirmware Information

GPS StatusGPS Status

Upgrade RA and DECUpgrade RA and DEC

AlignAlign

Polar AlignPolar Align

SolarSys AlignSolarSys Align

One Star AlignOne Star Align

Multi-Star AlignMulti-Star Align

Pole Star PositionPole Star Position

PEC OptionPEC Option

PEC Playback OffPEC Playback Off

PEC Playback OnPEC Playback On

Record PECRecord PEC

Set User Objects

Set User ObjectsSet User Objects

Set Guide RateSet Guide Rate

To Zero PositionTo Zero Position

Add A New Record

Add A New RecordAdd A New Record

Browse Records

Browse RecordsBrowse Records

Delete One Record

Delete One RecordDelete One Record

Delete All Records

Delete All RecordsDelete All Records

31

Appendix C. Firmware Upgrade

The firmware in the 8408 hand controller and motor control boards can be upgraded by the
customer. Please check iOptron’s website, www.iOptron.com
ZEQ25GT with 8408 Hand Controller, for detail.

, under Support Directory/ZEQ Mounts, select

32

Appendix D. Computer Control an ZEQ25GT Mount

The ZEQ25GT mount can be connected to a computer using supplied RS232 cable. A RS232 to
USB adapter (not supplied) is needed if your computer does not have a serial port, like most of the laptops
on the market today. Follow the adapter instructions to install the adapter driver.

When the communication between the mount and computer has been established, the mount can be
controlled via ASCOM protocol.

To control the mount via ASCOM protocol, you need:

1. Download and install ASCOM Platform from http://www.ascom-standards.org/
PC meet the software requirement. Refer to the ascom-standards website for details.

2. Download and install latest iOptron Telescope .NET ASCOM drive from iOptron website.

3. Planetarium software that supports ASCOM protocol. Follow software instructions to select the
iOptron Telescope.

. Make sure you

Please refer to iOptron website, www.iOptron.com

Telescope .NET ASCOM Driver, for more detail.

ZEQ25GT mount may also be directly controlled by other third party software and accessories.
Please contact them for more information.

, under Support Directory/ASCOM Driver, iOptron

33

Appendix E. Go2Nova® Star List

Messier Catalog

This table is licensed under the GNU Free Documentation License. It uses material from the Wikipedia

article List of Messier objects

Named Star List

001 Acamar 050 Asellus Australis 099 Kaus Media 148 Rastaba
002 Achernar 051 Asellus Borealis 100 Keid 149 Regulus
003 Acrux 052 Aspidiske 101 Kitalpha 150 Rigel
004 Acubens 053 Atik 102 Kochab 151 Rigel Kentaurus
005 Adhafera 054 Atlas 103 Kornephoros 152 Ruchbah
006 Adhara 055 Atria 104 Kurhah 153 Rukbat
007 Al Na’ir 056 Avoir 105 Lesath 154 Sabik
008 Albali 057 Azha 106 Maia 155 Sadachbia
009 Alberio 058 Baten Kaitos 107 Marfik 156 Sadalbari
010 Alchibar 059 Beid 108 Markab 157 Sadalmelik
011 Alcor 060 Bellatrix 109 Matar 158 Sadalsuud
012 Alcyone 061 Betelgeuse 110 Mebsuta 159 Sadr
013 Aldebaran 062 Biham 111 Megrez 160 Saiph
014 Alderamin 063 Canopus 112 Meissa 161 Scheat
015 Alfirk 064 Capella 113 Mekbuda 162 Schedar
016 Algedi 065 Caph 114 Menkalinan 163 Seginus
017 Algenib 066 Castor 115 Menkar 164 Shaula
018 Algiebra 067 Celabrai 116 Menkent 165 Sheiak
019 Algol 068 Celaeno 117 Menkib 166 Sheratan
020 Algorab 069 Chara 118 Merak 167 Sirius
021 Alhena 070 Chertan 119 Merope 168 Skat
022 Alioth 071 Cor Caroli 120 Mesartim 169 Spica
023 Alkaid 072 Cursa 121 Miaplacidus 170 Sterope
024 Alkalurops 073 Dabih 122 Mintaka 171 Sulafat
025 Alkes 074 Deneb 123 Mira 172 Syrma
026 Almach 075 Deneb Algedi 124 Mirach 173 Talitha
027 Alnasl 076 Deneb Kaitos 125 Mirfak 174 Tania Australis
028 Alnilam 077 Denebola 126 Mirzam 175 Tania Borealis
029 Alnitak 078 Dubhe 127 Mizar 176 Tarazed
030 Alphard 079 Edasich 128 Muphrid 177 Taygeta
031 Alphecca 080 Electra 129 Muscida 178 Thuban
032 Alpheratz 081 Elnath 130 Nashira 179 Unukalhai
033 Alrakis 082 Eltanin 131 Nekkar 180 Vega
034 Alrescha 083 Enif 132 Nihal 181 Vindemiatrix
035 Alshain 084 Errai 133 Nunki 182 Wasat
036 Altair 085 Fomalhaut 134 Nusakan 183 Wazn
037 Altais 086 Furud 135 Peacock 184 Yed Posterior
038 Alterf 087 Gacrux 136 Phact 185 Yed Prior
039 Aludra 088 Giausar 137 Phecda 186 Zaniah
040 Alula Australis 089 Gienah 138 Pherkad 187 Zaurak
041 Alula Borealis 090 Gomeisa 139 Pleione 188 Zavijava
042 Alya 091 Graffias 140 Polaris 189 Zosma
043 Ancha 092 Groombridge 1830 141 Pollux 190 Zubenelgenubi
044 Ankaa 093 Grumium 142 Porrima 191 Zubeneschamali
045 Antares 094 Hamal 143 Procyon 192 Barnard's Star
046 Arcturus 095 Homan 144 Propus 193 Kapteyn's Star
047 Arkab 096 Izar 145 Rassalas 194 Kruger 60
048 Arneb 097 Kaus Australis 146 Rasagethi 195 Luyten's Star
049 Ascella 098 Kaus Borealis 147 Rasalhague

35

A

A

A

A

A

A

A

A

A

A

AraA

A

A

A

A

A

A

A

Modern Constellations

No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

Constellation Abbreviation

ndromeda

ntlia

pus

quarius

quila

ries

uriga

Boötes Boo

Caelum Cae

Camelopardalis Cam

Cancer Cnc

Canes Venatici CVn

Canis Major CMa
Canis Minor CMi
Capricornus Cap

Carina Car

Cassiopeia Cas

Centaurus Cen

Cepheus Cep

Cetus Cet

Chamaeleon Cha

Circinus Cir

Columba Col
Coma Berenices Com
Corona Australis Cr
Corona Borealis CrB

Corvus Crv

Crater Crt

Crux Cru

Cygnus Cyg

Delphinus Del

Dorado Dor

Draco Dra

Equuleus Equ

Eridanus Eri

Fornax For
Gemini Gem

Grus Gru

Hercules Her

Horologium Hor

Hydra Hya

Hydrus Hyi

Indus Ind

nd

nt

ps

qr
ql
ra

ri

ur

No.

45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88

Constellation Abbreviation

Lacerta Lac

Leo Leo

Leo Minor LMi

Lepus Lep

Libra Lib

Lupus Lup

Lynx Lyn

Lyra Lyr

Mensa Men

Microscopium Mic

Monoceros Mon

Musca Mus
Norma Nor
Octans Oct

Ophiuchus Oph

Orion Ori

Pavo Pav

Pegasus Peg

Perseus Per
Phoenix Phe

Pictor Pic

Pisces Psc

Piscis Austrinus Ps

Puppis Pup

Pyxis Pyx

Reticulum Ret

Sagitta Sge

Sagittarius Sgr

Scorpius Sco

Sculptor Scl

Scutum Sct
Serpens Ser
Sextans Sex

Taurus Tau

Telescopium Tel

Triangulum Tri

Triangulum Australe Tr

Tucana Tuc

Ursa Major UMa
Ursa Minor UMi

Vela Vel

Virgo Vir

Volans Vol

Vulpecula Vul

A

Deep Sky Object List

ID No. OBJECT NGC # Messier# IC#A(Abell) U(UGC) ID No. OBJECT NGC # Messier# IC#

1 Andromeda Galaxy 224 31 31 Hind's Variable Nebula 1555
2 Barnards Galaxy 6822 32 Hubble's Variable Nebula 2261

3 Beehive Cluster 2632 44 33 Integral Sign Galaxy 3697
4 Blackeye Galaxy 4926 64 34 Jewel Box Cluster 4755
5 Blinking Planetary Nebula 6826 35 Keyhole Nebula 3372
6 Blue Flash Nebula 6905 36 Lagoon Nebula 6523 8
7 Blue Planetary 3918 37 Little Gem 6445
8 Blue Snowball Nebula 7662 38 Little Gem Nebula 6818

9 Box Nebula 6309 39 Little Ghost Nebula 6369
10 Bubble Nebula 7635 40 North American Nebula 7000
11 Bipolar Nebula 6302 41 Omega Nebula 6618 17
12 Butterfly Cluster 6405 6 42 Orion Nebula 1976 42
13 California Nebula 1499 43 Owl Nebula 3587 97
14 Cat's Eye Nebula 6543 44 Pelican Nebula 5070
15 Cocoon Nebula 5146 45 Phantom Streak Nebula 6741
16 Cone Nebula 2264 46 Pinwheel Galaxy 598 33
17 Cork Nebula 650-51 76 47 Pleiades 45
18 Crab Nebula 1952 1 48 Ring Nebula 6720 57
19 Crescent Nebula 6888 49 Ring Tail Galaxy 4038
20 Draco Dwarf 10822
21 Duck Nebula 2359
22 Dumbbell Nebula 6853 27
23 Eagle Nebula 16
24 Eight-Burst Nebula 3132
25 Eskimo Nebula 2392
26 Flaming Star Nebula 405
27 Ghost of Jupiter 3242
28 Great Cluster 6205 13
29 Helix Nebula 7293
30 Hercules Galaxy Cluster 2151

50 Rosette Nebula 2237
51 Saturn Nebula 7009
52 Sextans B Dwarf
53 Small Magellanic Cloud 292
54 Sombrero Galaxy 4594
55 Spindle Galaxy 3115
56 Tank Track Nebula 2024
57 Trifid Nebula 6514
58 Ursa Minor Dwarf
59 Whirlpool Galaxy 5194
60 Wild Duck Cluster 6705

104

20

51
11

(Abell) U(UGC)

5373

9749

j

A

A

A

Double Star List

No.

1 Gam And 9.8 2.3 / 5.1 37734 Almaak 36 Eta Cas 12.9 3.5 / 7.5 21732 Achird
2 Pi And 35.9 4.4 / 8.6 54033 37 Iot Cas 2.3 4.7/7.0/8.2 12298
3 Bet Aql 12.8 3.7 / 11 125235 Alshain 38 Psi Cas 25 4.7 / 8.9 11751
4 11 Aql 17.5 5.2 / 8.7 104308 39 Sig Cas 3.1 5.0 / 7.1 35947
5 15 Aql 34 5.5 / 7.2 142996 40 E3053 Cas 15.2 5.9 / 7.3 10937
6 E2489
757
8 Zet Aqr 2.1 4.3 / 4.5 146108 43 Del Cep 41 3.5 / 7.5 34508

9 94 Aqr 12.7 5.3 / 7.3 165625 44 Xi Cep 7.6 4.3 / 6.2 19827 Al kurhah
10 41 Aqr 5.1 5.6 / 7.1 190986 45 Kap Cep 7.4 4.4 / 8.4 9665
11 107 Aqr 6.6 5.7 / 6.7 165867 46 Omi Cep 2.8 4.9 / 7.1 20554
12 12 Aqr 2.5 5.8 / 7.3 145065 47 E2840 Cep 18.3 5.5 / 7.3 33819
13 Tau Aqr 23.7 5.8 / 9.0 165321 48 E2883 Cep 14.6 5.6 / 7.6 19922
14 Gam Ari 7.8 4.8 / 4.8 92681 Mesartim 49 Gam Cet 2.8 5.0 / 7.7 110707 Kaffaljidhma
15 Lam Ari 37.8 4.8 / 6.7 75051 50 37 Cet 50 5.2 / 8.7 129193
16 The Aur 3.6 2.6 / 7.1 58636 51 66 Cet 16.5 5.7 / 7.5 129752
17 Nu Aur 55 4.0 / 9.5 58502 52 Eps CMa 7.5 1.5 / 7.4 172676 Adhara
18 Ome Aur 5.4 5.0 / 8.0 57548 53 Tau CMa 8.2 4.4/10/11 173446
19 Eps Boo 2.8 2.5 / 4.9 83500 Izar 54 145 CMa 25.8 4.8 / 6.8 173349
20 Del Boo 105 3.5 / 7.5 64589 55 Mu CMa 2.8 5.0 / 7.0 152123
21 Mu 1 Boo 108 4.3 / 6.5 64686 Alkalurops 56 Nu 1 CMa 17.5 5.8 / 8.5 151694
22 Tau Boo 4.8 4.5 / 11 100706 57 Iot Cnc 30.5 4.2 / 6.6 80416
23 Kap Boo 13.4 4.6 / 6.6 29046 58 Alp Cnc 11 4.3 / 12 98267 Acubens
24 Xi Boo 6.6 4.7 / 6.9 101250 59 Zet Cnc 6 5.1 / 6.2 97646
25 Pi Boo 5.6 4.9 / 5.8 101139 60 24 Com 20.6 5.0 / 6.6 100160
26 Iot Boo 38 4.9/7.5/13 29071 61 35 Com 1.2 5.1/7.2/9.1 82550
27 E1835 Boo 6.2 5.1 / 6.9 120426 62 2 Com 3.7 5.9 / 7.4 82123
28 44 Boo 2.2 5.3 / 6.2 45357 63 Zet CrB 6.1 5.0 / 6.0 64833
29 Cam 2.4 4.2 / 8.5 24054 64 Gam Crt 5.2 4.1 / 9.6 156661
30 32 Cam 21.6 5.3 / 5.8 2102 65 Del Crv 24.2 3.0 / 9.2 157323 Algorab
31 Alp 2 Cap 6.6 3.6 / 10 163427 Secunda giedi 66 Alp CVn 19.4 2.9 / 5.5 63257 Cor caroli
32 Alp 1 Cap 45 4.2 / 9.2 163422 Prima giedi 67 25 CVn 1.8 5.0 / 6.9 63648
33 Pi Cap 3.4 5.2 / 8.8 163592 68 2 CVn 11.4 5.8 / 8.1 44097
34 Omi Cap 21 5.9 / 6.7 163625 69 Gam Cyg 41 2.2 / 9.5 49528 Sadr
35 Alp Cas 64.4 2.2 / 8.9 21609 Shedir 70 Del Cyg 2.5 2.9 / 6.3 48796

ect Const Sep. Magitude

Ob

ql 8.2 5.6 / 8.6 104668 41 3 Cen 7.9 4.5 / 6.0 204916
ql 36 5.8 / 6.5 143898 42 Bet Cep 13.6 3.2 / 7.9 10057

SAO

Comm. Name

No.

Object Const Sep. Magitude

SAO

Comm. Name

lfirk

No.

j

71 Bet Cyg 34.4 3.1 / 5.1 87301 Albireo 106 Del Her 8.9 3.1 / 8.2 84951 Sarin
72 Omi 1 Cyg 107 3.8 / 6.7 49337 107 Mu Her 34 3.4 / 9.8 85397
73 52 Cyg 6.1 4.2 / 9.4 70467 108 Alp Her 4.6 3.5 / 5.4 102680 Rasalgethi
74 Ups Cyg 15.1 4.4 / 10 71173 109 Gam Her 42 3.8 / 9.8 102107
75 Mu Cyg 1.9 4.7 / 6.1 89940 110 Rho Her 4.1 4.6 / 5.6 66001
76 Psi Cyg 3.2 4.9 / 7.4 32114 111 95 Her 6.3 5.0 / 5.2 85647
77 17 Cyg 26 5.0 / 9.2 68827 112 Kap Her 27 5.0 / 6.2 101951
78 61 Cyg 30.3 5.2 / 6.0 70919 113 E2063 Her 16.4 5.7 / 8.2 46147
79 49 Cyg 2.7 5.7 / 7.8 70362 114 100 Her 14.3 5.9 / 5.9 85753
80 E2762 Cyg 3.4 5.8 / 7.8 70968 115 54 Hya 8.6 5.1 / 7.1 182855
81 E2741 Cyg 1.9 5.9 / 7.2 33034 116 HN69 Hya 10.1 5.9 / 6.8 181790
82 Gam Del 9.6 4.5 / 5.5 106476 117 Eps Hyd 2.7 3.4 / 6.8 117112
83 Eta Dra 5.3 2.7 / 8.7 17074 118 The Hyd 29.4 3.9 / 10 117527
84 Eps Dra 3.1 3.8 / 7.4 9540 Tyl 119 N Hyd 9.4 5.6 / 5.8 179968
85 47 Dra 34 4.8 / 7.8 31219 120 Lac 28.4 4.5 / 10 72155
86 Nu Dra 61.9 4.9 / 4.9 30450 121 8 Lac 22 5.7/6.5/10 72509
87 Psi Dra 30.3 4.9 / 6.1 8890 122 Gam 1 Leo 4.4 2.2 / 3.5 81298 Algieba
88 26 Dra 1.7 5.3 / 8.0 17546 123 Iot Leo 1.7 4.0 / 6.7 99587
89 16&17 Dra 90 5.4/5.5/6.4 30012 124 54 Leo 6.6 4.3 / 6.3 81583
90 Mu Dra 1.9 5.7 / 5.7 30239 125 Gam Lep 96 3.7 / 6.3 170757
91 40/41 Dra 19.3 5.7 / 6.1 8994 126 Iot Lep 12.8 4.4 / 10 150223
92 1 Equ 10.7 5.2 / 7.3 126428 127 Kap Lep 2.6 4.5 / 7.4 150239
93 The Eri 4.5 3.4 / 4.5 216114 Acamar 128 h3752 Lep 3.2 5.4 / 6.6 170352
94 Tau 4 Eri 5.7 3.7 / 10 168460 129 Iot Lib 57.8 4.5 / 9.4 159090
95 Omi 2 Eri 8.3 4.4/9.5/11 131063 Keid 130 Lib 23 5.7 / 8.0 183040
96 32 Eri 6.8 4.8 / 6.1 130806 131 Mu Lib 1.8 5.8 / 6.7 158821
97 39 Eri 6.4 5.0 / 8.0 149478 132 Eta Lup 15 3.6 / 7.8 207208
98 Alp For 5.1 4.0 / 6.6 168373 Fornacis 133 Xi Lup 10.4 5.3 / 5.8 207144
99 Ome For 10.8 5.0 / 7.7 167882 134 38 Lyn 2.7 3.9 / 6.6 61391

100 Alp Gem 3.9 1.9 / 2.9 60198 Castor 135 12 Lyn 1.7 5.4/6.0/7.3 25939
101 Del Gem 5.8 3.5 / 8.2 79294 Wasat 136 19 Lyn 14.8 5.8 / 6.9 26312
102 Lam Gem 9.6 3.6 / 11 96746 137 Bet Lyr 46 3.4 / 8.6 67451 Sheliak
103 Kap Gem 7.1 3.6 / 8.1 79653 138 Zet Lyr 44 4.3 / 5.9 67321
104 Zet Gem 87 3.8/10/8.0 79031 Mekbuda 139 Eta Lyr 28.1 4.4 / 9.1 68010 Aldafar
105 38 Gem 7.1 4.7 / 7.7 96265 140 Eps 1 Lyr 2.6 5.0 / 6.1 67309 Double dbl1

ect Const Sep. Magitude

Ob

SAO

Comm. Name

No.

Object Const Sep. Magitude

SAO

Comm. Name

No.

j

141 Eps 2 Lyr 2.3 5.2 / 5.5 67315 Double dbl2 176 Zet Psc 23 5.6 / 6.5 109739
142 Alp Mic 20.5 5.0 / 10 212472 177 Kap Pup 9.9 4.5 / 4.7 174199
143 Zet Mon 32 4.3 / 10 135551 178 Eta Pup 9.6 5.8 / 5.9 174019
144 Eps Mon 13.4 4.5 / 6.5 113810 179 Eps Scl 4.7 5.4 / 8.6 167275
145 Bet Mon 7.3 4.7/4.8/6.1 133316 180 Bet Sco 13.6 2.6 / 4.9 159682 Graffias
146 15 Mon 2.8 4.7 / 7.5 114258 181 Sig Sco 20 2.9 / 8.5 184336 Alniyat
147 70 Oph 4.5 4.0 / 5.9 123107 182 Nu Sco 41 4.2 / 6.1 159764 Jabbah
148 67 Oph 55 4.0 / 8.6 123013 183 2 Sco 2.5 4.7 / 7.4 183896
149 Lam Oph 1.5 4.2 / 5.2 121658 Marfic 184 Sco 23 5.4 / 6.9 207558
150 Xi Oph 3.7 4.4 / 9.0 185296 185 Hn39 Sco 5.4 5.9 / 6.9 184369
151 36 Oph 4.9 5.1 / 5.1 185198 186 12 Sco 3.9 5.9 / 7.9 184217
152 Tau Oph 1.7 5.2 / 5.9 142050 187 Bet Ser 31 3.7 / 9.0 101725
153 Rho Oph 3.1 5.3 / 6.0 184382 188 Del Ser 4.4 4.2 / 5.2 101624
154 39 Oph 10.3 5.4 / 6.9 185238 189 Nu Ser 46 4.3 / 8.5 160479
155 Bet Ori 9.5 0.1 / 6.8 131907 Rigel 190 The Ser 22.3 4.5 / 5.4 124070 Alya
156 Del Ori 53 2.2 / 6.3 132220 Mintaka 191 59 Ser 3.8 5.3 / 7.6 123497
157 Iot Ori 11.3 2.8 / 6.9 132323 Nair al saif 192 Zet Sge 8.5 5.0 / 8.8 105298
158 Lam Ori 4.4 3.6 / 5.5 112921 Meissa 193 Eta Sgr 3.6 3.2 / 7.8 209957
159 Sig Ori 13 3.8/7.2/6.5 132406 194 Sgr 5.5 5.2 / 6.9 209553
160 Rho Ori 7.1 4.5 / 8.3 112528 195 Phi Tau 52 5.0 / 8.4 76558
161 E747 Ori 36 4.8 / 5.7 132298 196 Chi Tau 19.4 5.7 / 7.6 76573
162 1 Peg 36.3 4.1 / 8.2 107073 197 118 Tau 4.8 5.8 / 6.6 77201
163 Eps Per 8.8 2.9 / 8.1 56840 198 6 Tri 3.9 5.3 / 6.9 55347
164 Zet Per 12.9 2.9 / 9.5 56799 Atik 199 Zet UMa 14 2.4 / 4.0 28737 Mizar
165 Eta Per 28.3 3.3 / 8.5 23655 Miram in becvar 200 Nu UMa 7.2 3.5 / 9.9 62486 Alula borealis
166 The Per 18.3 4.1 / 10 38288 201 23 UMa 23 3.6 / 8.9 14908
167 E331 Per 12.1 5.3 / 6.7 23765 202 Ups UMa 11.6 3.8 / 11 27401
168 Del PsA 5.1 4.2 / 9.2 214189 203 Xi UMa 1.8 4.3 / 4.8 62484 Alula australia
169 Iot PsA 20 4.3 / 11 213258 204 Sig 2 UMa 3.9 4.8 / 8.2 14788
170 Bet PsA 30.3 4.4 / 7.9 213883 205 57 UMa 5.4 5.4 / 5.4 62572
171 Gam PsA 4.2 4.5 / 8.0 214153 206 Alp UMi 18.4 2.0 / 9.0 308 Polaris
172 Eta PsA 1.7 5.8 / 6.8 190822 207 Gam Vir 1.4 3.5 / 3.5 138917 Porrima
173 Alp Psc 1.8 4.2 / 5.2 110291 Alrisha 208 The Vir 7.1 4.4 / 9.4 139189
174 55 Psc 6.5 5.4 / 8.7 74182 209 Phi Vir 4.8 4.8 / 9.3 139951
175 Psi Psc 30 5.6 / 5.8 74483 210 84 Vir 2.9 5.7 / 7.9 120082

ect Const Sep. Magitude

Ob

SAO

Comm. Name

No.

Object Const Sep. Magitude

SAO

Comm. Name

IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY

A. iOptron warrants your telescope, mount, or controller to be free from defects in materials and workmanship for two years. iOptron

will repair or replace such product or part which, upon inspection by iOptron, is found to be defective in materials or workmanship.

As a condition to the obligation of iOptron to repair or replace such product, the product must be returned to iOptron together with

proof-of-purchase satisfactory to iOptron.

B. The Proper Return Merchant Authorization Number must be obtained from iOptron in advance of return. Call iOptron at

1.781.569.0200 to receive the RMA number to be displayed on the outside of your shipping container.

All returns must be accompanied by a written statement stating the name, address, and daytime telephone number of the owner,

together with a brief description of any claimed defects. Parts or product for which replacement is made shall become the property

of iOptron.

The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of iOptron, and shall be

required to prepay such costs.

iOptron shall use reasonable efforts to repair or replace any telescope, mount, or controller covered by this warranty within thirty

days of receipt. In the event repair or replacement shall require more than thirty days, iOptron shall notify the customer accordingly.

iOptron reserves the right to replace any product which has been discontinued from its product line with a new product of

comparable value and function.

This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or

subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal wear is

not covered by this warranty.

IOPTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR A

PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HERE. THE SOLE OBLIGATION OF IOPTRON UNDER THIS

LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS

SET FORTH HERE. IOPTRON EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR

CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE

OR INABILITY TO USE ANY IOPTRON PRODUCT. ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE

DISCLAIMED SHALL BE LIMITED IN DURATION TO A TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL

PURCHASE.

Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied

warranty lasts, so the above limitations and exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

iOptron reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.

If warranty problems arise, or if you need assistance in using your telescope, mount, or controller contact:

iOptron Corporation

Customer Service Department

6E Gill Street

Woburn, MA 01801

www.ioptron.com

[e-mail]

Tel. [phone]

Fax. [phone]

Monday-Friday 9AM-5PM EST

NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized iOptron

dealer in the U.S.A. or Canada or directly from iOptron. Warranty outside the U.S.A. and Canada is valid only to customers who
purchased from an iOptron Distributor or Authorized iOptron Dealer in the specific country. Please contact them for any warranty.