iOptron

iOptron Accessories 7201, Accessories 7200 User Manual

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iOptron® CEM60 Center-Balanced Equatorial Mount

Instruction Manual

Product #7200 and#7201

Read the included CEM60 Quick Setup Guide BEFORE taking the mount out of the case!

This product is a precision instrument and uses a magnetic gear meshing mechanism. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount.

You must hold the mount firmly when disengaging or adjusting the gear switches. Otherwise personal injury and/or equipment damage may occur. Any worm system damage due to improper gear meshing/slippage will not be covered by iOptron limited warranty.

If you have any questions please contact us at support@ioptron.com

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 using a telescope.

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Table of Content

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

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1. CEM60 Overview...........................................................................................................................................

5

2. CEM60 Terms ................................................................................................................................................

6

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

6

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

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2.3. CEM60 Mount Ports................................................................................................................................

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2.4. CEM60 Gear Switches ............................................................................................................................

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2.5. CEM60 Cable Management ....................................................................................................................

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2.6. Go2Nova® 8407 Hand Controller ...........................................................................................................

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2.6.1. Key Description................................................................................................................................

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2.6.2. The LCD Screen.............................................................................................................................

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3. CEM60 Mount Assembly.............................................................................................................................

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3.1. Introduction ...........................................................................................................................................

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3.2. CEM60 Mount Assembly......................................................................................................................

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

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4.1. Setting the Mount and Performing Polar Alignment.............................................................................

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

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4.3. One Star Alignment...............................................................................................................................

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

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

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4.6. Turning Off the Mount..........................................................................................................................

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4.7. Putting the Mount Back into the Carrying Case....................................................................................

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5. Complete Functions of Go2Nova® 8407 Hand Controller...........................................................................

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5.1. Select and Slew......................................................................................................................................

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

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

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5.1.3. Stars................................................................................................................................................

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5.1.4. Comets............................................................................................................................................

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5.1.5. Asteroids.........................................................................................................................................

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5.1.6. Constellations.................................................................................................................................

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5.1.7. Custom Objects ..............................................................................................................................

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

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

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5.3. Align......................................................................................................................................................

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5.3.1. Pole Star Position ...........................................................................................................................

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5.3.2. Polar Align......................................................................................................................................

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5.3.3. One Star Alignment........................................................................................................................

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5.3.4. Solar System Align.........................................................................................................................

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5.3.5. Multi-Star Align .............................................................................................................................

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5.3.6. 2-Star Polar Align...........................................................................................................................

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5.3.7. Display Axes Error.........................................................................................................................

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5.4. Settings..................................................................................................................................................

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5.4.1. Set Time & Site ..............................................................................................................................

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5.4.2. Set Display & Beep........................................................................................................................

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5.4.3. Set Guider Rate...............................................................................................................................

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5.4.4. Set Tracking Rate ...........................................................................................................................

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5.4.5. Set Parking Position .......................................................................................................................

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5.4.6. Meridian Treatment........................................................................................................................

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5.4.7. Track Below Horizon .....................................................................................................................

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5.4.8. Set Eyepiece Light..........................................................................................................................

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5.4.9. Heating Controller..........................................................................................................................

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5.5. Electric Focuser.....................................................................................................................................

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5.6. PEC Option............................................................................................................................................

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5.6.1. PEC Playback.................................................................................................................................

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5.6.2. Record PEC....................................................................................................................................

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5.7. Telescope Motion..................................................................................................................................

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5.7.1. Park Scope......................................................................................................................................

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5.7.2. Search Zero Pos..............................................................................................................................

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5.8. Edit User Objects...................................................................................................................................

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5.8.1. Enter A New Comet .......................................................................................................................

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5.8.2. Enter Other Objects or Observation List........................................................................................

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5.9. Firmware Information ...........................................................................................................................

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5.10. Goto Zero Position ..............................................................................................................................

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

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6.1. Maintenance ..........................................................................................................................................

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

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

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

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

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Appendix B. Go2Nova® 8407 HC MENU STRUCTURE ..............................................................................

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

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Appendix D. Computer Control a CEM60 Mount...........................................................................................

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

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

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Ver. 1.0

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

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1. CEM60 Overview

Welcome to a new type of EQ mountThe iOptron® Center-Balanced Equatorial Mount, CEM! Its unique balance design puts the payload 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. The adjustable counterweight bar prevents the counterweight from getting in the way of the tripod or pier when operating at a low latitude position. Polar aligning is quick and accessible all the time since the polar scope is not blocked by the declination shaft.

The CEM60TM mount is equipped with the most advanced GOTONOVA® GOTO technology, making it one of the most powerful and accurate GOTO mounts available. The database of a Go2Nova® 8407 hand controller has over 300,000 objects. The other features include a magnetically loaded gear system, gear switches on both R.A. and DEC axes, a screw/worm type latitude adjuster and a built-in or customized cable management system. The CEM60-- a new category (and payload capacity) of mounts for viewing and astrophotography!

Features:

A new design, center-balanced equatorial mount (CEM) for maximum payload and minimum mount weight

Specialized astrophotography mount ideal for both visual observers and astro-photographers

Patent pending non-contact magnetically loaded gear system

Payload of 60 lbs (27.2 kg) with the mount-only weight of 27 lbs (12.3 kg)

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

Adjustable counterweight shaft for low latitude operation

Screw/worm type latitude adjuster for precision adjustments

Milling machine tooling vise type latitude bearing and lock system for rock solid positioning

Azimuth fine adjusters for easy azimuth adjustment

Precision stepper motor with 0.06 arc-sec accuracy for precise GOTO and accurate tracking

Permanent periodic error correction (PPEC) (#7200) or Real-time periodic error correction (RPEC) (#7201)

iOptron AccuAligningTM calibrated polar scope with dark-field illumination and easy polar alignment procedure for fast and accurate polar alignment

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

Go2Nova® 8407 controller with Advanced GOTONOVA® GOTO Technology an built-in heater

Integrated ST-4 compatible autoguiding port

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

Built-in or customized cable management system

Spring loaded Vixen/Losmandy dual saddle

150mm base size to match optional 2 inch heavy-duty stainless steel tripod (8kg) or 42/48 inch pier

Optional PowerWeightTM rechargeable battery pack

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2. CEM60 Terms

2.1. Parts List1

SHIPPING CONTENTS

There are two shipping boxes for a CEM60 mount. One box contains an aluminum carrying case with a mount, either CEM60 (#7200) or CEM60-EC (#7201) mount head, a hand controller, a counterweight shaft and accessories, including a counterweight pin and locking screws. The other box is for a 21lbs (9.5kg) counterweight. The contents are listed below:

iOptron® CEM60 telescope mount (#7200, with silver adjustment knobs) or iOptron® CEM60-EC mount (high precision model #7201, with red adjustment knobs)

Go2Nova® 8407+ Hand Controller

One 21lbs (9.5 kg) counterweight

Stainless steel counterweight shaft

Dark field illuminating LED cable

AC adapter (100V-240V)

HC Controller Cable X 1

Serial cable (RS232 toRJ9)

12V DC power cable with car charger

Aluminum carrying case

Quick Start Guide

OPTIONAL PARTS

2” tripod (#8021ACC)

42 inch pier (#8033) /48 inch pier (#8030)

MiniPier (#8032)

PowerWeightTM rechargeable counterweight battery (#8128)

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

1 US market only. Actual contents may vary.

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2.2. Assembly Terms

 

Dovetail saddle

 

Polar axis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Polar axis cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CW mounting housing

 

 

DEC gear switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shaft position screw

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEC drive unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CW locking screw

 

 

 

 

 

 

 

 

 

 

 

 

 

Polar scope cover

 

 

 

 

 

 

 

 

 

Counterweight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lat. Locking clamp

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CW bar

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Az. adj. knob

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Az. Locking nut

 

CW safety screw

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Optional tripod

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1.CEM60 assembly

2.3. CEM60 Mount Ports

Ports on the mount

Figure 2. Ports on a CEM60 mount

I/O: Power Switch

DC 12V: DC power socket for the mount

PORT: iOptron port for connecting to other iOptron accessories, such as an electronic focuser or a planetary dome control. DO NOT plug your ST-4 guiding camera cable into it. It may damage the mount or guiding camera electronics.

HBX (Hand Box): For connecting to an 8407 Hand Controller

GUIDE: ST-4 compatible autoguiding port

RS232: Serial port for mount-computer control and firmware upgrade

On DEC unit:

 

Reticle: Power supply for the polar scope dark field

Figure 3. LED reticle on DEC unit

illumination LED, or illuminated eyepiece

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2.4. CEM60 Gear Switches

The CEM gear system utilizes a magnetic force system for optimal gear meshing. Fully turn the Gear Switch clockwise to disengage the worm from the worm wheel. Turn the Gear Switch counterclockwise to engage the worm to worm wheel, as indicated on the mount. The Gear Switch MUST NOT be left in a position that is in between the Engaged and Disengaged positions. Setting the Gear Switch in between states may damage the worm or worm wheel.

WARNING: Never disengage or adjust the Gear Switches without holding the mount firmly! Personal injury and/or equipment damage may happen.

Figure 4. CEM60 R.A. (left) and DEC (right) gear switches

2.5. CEM60 Cable Management

The CEM60 mount has a pre-wired instrument panel

 

that allows the user to connect his imaging gears without

 

having the wires/cables dragged all over the mount when the

 

mount is slewing or tracking. As shown in Figure 5, the

 

Instrument Panel has the following:

 

2X 12V power outlets for powering the CCD

Figure 5. Instrument panel

camera or electric focuser

4X USB 2.0 port with Type A connector for connecting to accessories.

1X 6P6C port which can be used to bridge the guiding port or accessories with a 6P6C/6P4C plug

The USB hub is a non-powered one. It will draw power from a source, such a computer USB port. Therefore, the maximum usable USB ports might be limited, depending on the power consumption of the accessories.

The ports on the instrument panel are connected to the input panel located next to the polar scope, as shown in Figure 6.

1X 12V power input (5A max.)

1X USB 2.0 port with Type B connector

1X 6P6C port

Figure 6. Input panel

In the event where a user would like to wire his own cables, he can remove the dovetail saddle. Next he needs to remove the polar scope and run the cables through the polar scope opening. Solder the cables onto the instrument pane. When reinstalling the dovetail saddle, make sure that the STOPPER and the arrow is pointed to front, as shown in Figure 7.

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Figure 7. Stopper on a dovetail saddle

2.6. Go2Nova® 8407 Hand Controller

DEC+

R.A.+

R.A.-

DEC-

HBX Serial

Port Port

Figure 8. Go2Nova 8407 hand controller

The Go2Nova® 8407 hand controller (HC) shown in Figure 8 is the standard controllers that is used on the CEM60 mount. It has an integrated temperature controller that ensures it can be operated at -20ºC (-4ºF). It has a large LCD screen, function keys, direction keys and number keys on the front; a red LED reading light on the back; and a HBX port (6-pin) and a serial port (4-pin) at the bottom.

2.6.1.Key Description

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

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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 R.A. direction. They are also used to browse the menu or move the cursor while in the menu. Press and hold down an arrow key for a fast scrolling.

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

Light Key(☼): Turns on/off the red LED reading light on the back of the controller.

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

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

HBX (Handbox) port: connect the HC to the CEM60 mount using a 6-wire RJ11 cable.

Serial port: connect the HC to a Computer via a RS232 to 4-wire RJ-9 cable. The pin out of the serial port is shown in Figure 9.

Figure 9. Serial port pin out on an 8407 hand controller

2.6.2. The LCD Screen

The 8407 HC has a large 8-line, 21-character per line LCD screen, which displays all the information as shown in Figure 10. The user interface is simple and easy to operate.

Figure 10. 8407 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.

Zero Position: The position when the mount is turned on. Or when the mount is moved to Zero Position using “Goto Zero Position” command;

User Position: The mount is pointed to a user defined position, which could be a real sky object or just simply a position defined by pressing an arrow key.

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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;

2.Target R.A.: Right Ascension of the target object.

3.Target Declination: Declination of the target object.

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

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

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

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

8.Local Date and Time: display local time in a format of YY-MM-DD HH:MM:SS.

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

Stop: mount is not moving;

Slew: mount is moving with an arrow key pressed;

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

10.GPS status: When the power is turned on, it shows “GPS ON”, which means that the mount is connected to its GPS receiver. When the GPS receiver finds the satellites and receives the GPS signal, it shows “GPS OK”. The “GPS OK” may turn off after a few minutes to save power.

11.PEC status: Display of “PEC” here Indicates the PEC playback is turned on. Default is off.

12.Tracking speed: Display current tracking status of the mount

SDRL: mount is tracking at sidereal speed;

Solar: mount is tracking at solar speed;

Lunar: mount is tracking at lunar speed;

King: mount is tracking at king speed;

CSTM: mount is tracking at a customer-defined speed.

13.Slew speed: It has 9 speeds: 1X, 2X, 8X, 16X, 64X, 128X, 256X, 512X, MAX (~3.75º/sec).

14.Operation Mode: Indicate if the mount is working at the EQ mode

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3. CEM60Mount 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 set up 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 CEM60 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 CEM60 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 CEM60 mount.

3.2. CEM60Mount Assembly

NOTE: The CEM60 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.

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WARNING: DO NOT rock the counterweight shaft rigorously. Worm system damage due to improperly gear mesh/slippage will not be covered by warranty.

WARNING: The new Gear Switch will allow you to achieve the 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 releasing Gear Switch or adjusting gear tension.

STEP 1. Removing the Mount from the Carrying Case

The mount is shipped with both R.A. Gear Switch disengaged. ALWAYS turn the Gear Switch fully counterclockwise to fully engage the Gear Switch before removing the mount from the carrying case (Figure 11).

Figure 11. Engage the Gear Switches before

Figure 12. Stainless steel lever

removing the mount from the carrying case

 

 

 

The CEM60 mount comes with a stainless steel (SS) lever which can be unthreaded from the mount. It can be used for tightening all the screws/nuts (Figure 12).

STEP 2. Attaching the Mount

The mount has a 150mm diameter base which can be mounted onto an optional iOptron 2” tripod or pier. If you have your own tripod/pier, make sure it has two M8 threaded holes separated by 130mm, with a Φ12mm X 15mm center stud.

There are two sets of mounting studs and azimuth locking nuts. Thread the two studs onto an iOptron tripod/or pier (if you are using one). Use the pair of mounting holes that are closest to the edge and thread the studs using the shorter thread side. Use the lever to tighten the mounting studs. Make sure that two studs are aligned eastern-western side by turning the tripod or pier.

Mounting studs

Azimuth locking nuts

Figure 13. Mounting studs and locking nuts

Back out the azimuth adjustment knobs to make enough room to prevent them from blocking the mounting knobs. Put the mount head onto the tripod. Make sure that the mount head is facing north. Install

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the Nylon washer. Put the azimuth locking nuts onto the mounting studs, hand tighten them. Adjust tripod/pier to level the mount.

Azimuth adjustment

 

Mounting stud

knob

 

 

 

 

 

 

Nylon washer

Figure 14. Attaching the mount

STEP 3. Setting the Latitude

This step requires you to know the latitude of your current location. This can be found from your 8407 hand controller after the embedded GPS receives the signal from the satellites. It also can be easily found on 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 GOTO accuracy.

Slightly loosen the Latitude Locking Clamps. Turn the Latitude Adjustment Knob until the arrow points to your current latitude on the Latitude Scale. Tighten the Latitude Locking Clamps when done.

Latitude

 

 

 

Latitude

Adjustment

 

 

locking clamp

knob

 

 

 

 

 

 

Figure 15. Setting the latitude

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 4. Installing the Counterweight (CW) Shaft

There are three screws on CEM60 CW Mounting Housing: A Shaft Locking Screw, a Shaft Position Screw on the other side and a Low-Latitude Set Screw.

To install the CW shaft

(1) Remove CW Shaft Locking Screw from the CW Mounting Housing and back out the CW Shaft Position Screw to make room for the CW shaft;

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