Zhumell Z10 DELUXE, Z10 Owner's Manual

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OWNER’S MANUAL

DOBSONIAN TELESCOPE

ZHUMELL Z10 DELUXE DOBSONIAN REFLECTOR TELESCOPE

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Zhumell customers know that there are plenty of ways
to experience the world. They also understand that,
however you choose to explore it, the best experience is one
that fully immerses you in the world’s most striking details.

That’s where our optics products come in. We strive to put
high-performance products in the hands of our customers
so that they can experience the world up close, with their
own eyes.

With Zhumell, you get field-tested, precision-crafted optics at
the best possible value. So even if you’re just starting out as
an amateur birder or astronomer, you don’t have to settle for
entry-level products. Zhumell customers enjoy life’s pursuits,
hobbies, and adventures in rich, colorful detail- the kind of
detail that only high-performance optics can produce.

At Zhumell, we design our binoculars, telescopes, and
spotting scopes for discerning, price-conscious users
who are uncompromising on quality. If you’re looking for
accessibly priced optics that will bring your world within
reach, you’re looking for Zhumell.

Enjoy the dob.

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ENJOYING YOUR

ZHUMELL DOBSONIAN TELESCOPE

i. Warnings

ii. Cleaning and Maintenance
iii. Collimation

1. Caring For Your Telescope

2. Specifications

3. Parts List

4. Telescope Assembly

5. Donsonian Telescope Basics

6. Viewing Through Your Telescope

7. Observation Tips

8. Cool Views

9. Astronomy Formulas

10. Astronomy Terminology

11. Telescope Terminology

12. FAQs

13. Warranty

i. Base Assembly
ii. Optical Tube Assembly

i. 1.25-inch Eyepieces
ii. 2-inch Eyepieces
iii. Altitude and Azimuth
iv. Focusing the Image
v. Cooling Fan
vi. Transportation

i. Checking and Aligning Your Finderscope

i. Selecting a Viewing Site
ii. Cooling Your Telescope
iii. Seeing and Transparency
iv. Dark-Adapting
v. Tracking Celestial Objects
vi. Selecting an Eyepiece

i. The Moon
ii. The Planets
iii. The Stars
iv. Deep-Sky Objects
v. Starhopping

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Zhumell telescopes are precision astronomical instruments
designed for ease of use and versatility in their application. As
with any telescope, Zhumell telescopes require some technical
knowledge of stellar movement and optical properties. We have
provided basic instructions for telescope use and astronomical
viewing in this manual.

Your Zhumell Dobsonian telescope is built with the highest-quality
optics and top-notch construction to provide years of reliable
functionality, but will require proper care.

If, after reading this manual, you still have questions about your
Zhumell telescope, please visit http://www.zhumell.com for
more helpful tips and contact information. Our customer service
representatives are available to address any problems you
encounter with your telescope. Please let us know about your
experiences; we would like to hear your feedback.

Enjoy your Zhumell.

CARING FOR YOUR

ZHUMELL DOBSONIAN TELESCOPE

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WARNINGS

• Do not use telescope or finderscope to look at the sun without

an appropriate solar filter. Doing so will cause permanent and
irreversible eye damage.

• Never use an eyepiece filter as a solar filter. Only solar filters will

completely cover the opening of the optical tube and provide
proper eye protection.

• Make sure no screws are loose before using telescope.

• Do not drop or shake your telescope as doing so may damage

the optics, or harm you or the people around you.

CARING FOR YOUR

ZHUMELL DOBSONIAN TELESCOPE

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COLLIMATION

Periodically, you will find that it is necessary to align the optical components
of your telescope. This procedure is called collimation. There is no
collimator included with the Zhumell Dobsonian, but regular collimation is
recommended for optimum telescope usage.

1. Remove the eyepiece from the eyepiece holder and insert laser

collimator into eyepiece holder. Secure the laser collimator by tightening
thumbscrew.

2. Turn the thumbscrew located on the side of the collimator to turn on

the collimator.

3. Look through the hole in the side of collimator to see where the laser is

reflected onto the reticle. If you cannot see the laser reflected back onto
the reticle, align the secondary mirror by adjusting the secondary mirror
collimation screws until the laser is reflected onto the inside of
the collimator.

4. Loosen 3 locking screws on bottom of optical tube (the thin ones that

stick farther out from the back of the mirror).

5. Align the laser to the center of the reticle by adjusting the 3 primary

mirror adjustment screws (the thick screws in the back of the mirror). Do
not over-turn these screws (max of ¼ turn at a time).

6. Tighten the 3 locking screws on bottom of optical tube to lock the

primary mirror into place.

USING YOUR

ZHUMELL DOBSONIAN TELESCOPE

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USING YOUR

ZHUMELL DOBSONIAN TELESCOPE

CLEANING AND MAINTENANCE

A telescope is carefully aligned during construction, and great care should
be taken to maintain this alignment over the life of the telescope. Cleaning
should be done as little as possible and then only with mild soap solution
and a soft, lint-free cloth. Do not rub elements when cleaning. Blot optical
components gently and allow telescope to air-dry. Store telescope in its box
or in a telescope case when not in use. Do not use pure alcohol or solvents
to clean any parts of the telescope. Do not remove optical elements from the
telescope as doing so may affect the alignment of optical components when
reassembled. If telescope needs realignment, contact Zhumell or another
professional.

1. Brush telescope optics with camelhair brush or blow off dust with an ear

syringe (can be purchased at any pharmacy). Do not use a commercial
photographic lens cleaner.

2. Remove organic materials (e.g. fingerprints) with short gentle strokes using

soft white tissue paper and a solution of three parts distilled water and
one part isopropyl alcohol. You may also add one drop of biodegradable
dish soap to one pint of the homemade solution. Do not use lotioned or
scented tissues as they could damage the optics of your telescope.

3. Wipe down the outside of your telescope with a dry cloth to remove

condensation prior to packing up your telescope. Do not wipe any of the
optical surfaces. Instead, allow the optics to dry naturally in warm indoor
air prior to packing up your telescope.

4. Protect your telescope from excessive heat. For example, do not

store your telescope in a sealed car on a warm day. Excessive storage
temperatures can damage your telescope.

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SPECIFICATIONS FOR YOUR

ZHUMELL DOBSONIAN TELESCOPE

Zhumell Z10

Objective/Aperture 254 mm / 10 inches

Focal Length 1250 mm

Limiting Magnitude 14.52

Focal Ratio F/4.92

OPTICAL TUBE ASSEMBLY

Eyepiece Format: 1.25 inch, and 2 inch
Finderscope: 8x50
Mount Type: Dobsonian

Tube Mount: Cradle Mount
Mount Adjustment: Altitude-Azimuth
Materials: Wood, Melamine

Box 1 of 2

• Dobsonian optical tube

• Plastic tube cover

• 2 silver side bearings

• Cooling fan, attached at bottom of optical

tube

• Battery pack for cooling fan

• Newtonian collimator

• 30 mm eyepiece (2 inch format)

• 9 mm eyepiece (1.25 inch format)

• Moon filter (1.25 inch format)

Box 2 of 2

• 8x50 finderscope

• Handle

• 10 long black Allen screws

• 2 medium silver Allen screws

• 3 medium silver Phillips screws

• Allen wrench

• 3 black plastic feet

• 2 short black Phillips screws

• Eyepiece holder shelf

• 2 large round black wood base plates

• Lazy susan (2 metal discs with a black

plastic roller in the middle)

• One black knob, with a thick screw, spacer,

large washer, small ball bearing washer, and
small plain washer

• 2 large black wood side panels for the base

• 1 small black wood side panel for the base

Not Included

• Philips Screwdriver

• AA Batteries

All Holes have been predrilled

PARTS LIST

ASSEMBLY OF YOUR

ZHUMELL DOBSONIAN TELESCOPE

a. Base Sides (2)
b. Base Front
c. Base Plates (2)
d. Bearing Plates (3)
e. Handle (and (2) silver

Allen screws)

f. Eyepiece Tray (and (2) black

Philips screws)

g. Feet (3)
h. Long Black Allen Screws (10)
i. Allen Wrench
j. Adjustment Bolt (with (2)

washers, (1) ball bearing, and
(1) Axle Sleeve)

Unbox and gather the pieces for base assembly. You will need:

c

a

b

e

f

h

j

g

d

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BASE ASSEMBLY

STEP 1: Screw the handle onto the Base Front using the (2) pre-drilled holes on the

front. Make sure that it is secure.

STEP 3: Repeat with the Right Base Side to complete the box. Be sure that all three sides are firmly

attached and feel stable.

STEP 2: Connect the Base Front to the Left Base Side using the pre-drilled holes in the Base Front and

(2) Long Black Allen Screws

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ASSEMBLY OF YOUR

ZHUMELL DOBSONIAN TELESCOPE

First, you will be assembling the telescope base housing. This will be the structure that holds your
scope in place.

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STEP 4: To attach the Eyepiece Tray to the Right Base, it’s easiest to turn the assembly on its side. Attach

the tray using the (2) pre-drilled holes and (2) black Philips screws. Return the base to standing position and
make sure the tray is secure.

YOU ARE NOW READY TO BEGIN THE ASSEMBLY OF THE BASE PLATE. THIS WILL BE THE PART THAT
ALLOWS YOUR BASE HOUSING AND TELESCOPE TO ROTATE IN A “LAZY SUSAN” STYLE.

STEP 5: First, the feet must be attached to the Base Plate. Choose the Base Plate with (1) center hole and

(3) holes around the edge. IMPORTANT: The feet must be attached to the side with a brass center hole.
Screw all (3) feet in place, with the wider side facing the board, using (3) medium silver Philips screws.

STEP 6: Choose the Base Plate with (1) center hole and (6) holes around the edge. Flip the base housing

upside-down and align the six pre-drilled holes with the base plate.

ASSEMBLY OF YOUR

ZHUMELL DOBSONIAN TELESCOPE