Zhumell AURORA 70 User manual

0˚
15˚W
30˚W
45˚W
60˚W
15˚E
30˚E
75˚W
OWNER’S MANUAL
AURORA TELESCOPE
ZHUMELL AURORA 70 WITH MOTOR DRIVE REFLECTOR TELESCOPE

2
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 aurora.

3
ENJOYING YOUR
ZHUMELL AURORA TELESCOPE
i. Warnings
ii. Cleaning and Maintenance
1. Caring For Your Telescope
2. Specifications
3. Parts List
4. Telescope Legend
5. Telescope Assembly
6. Viewing Through Your Telescope
7. Beginning Observation - The Moon
8. Intermediate Observation - Planets
9. Advanced Observation
10. Astronomy Formulas
11. Astronomy Terminology
12. Telescope Terminology
13. Warranty
i. Checking and Aligning Your Finderscope
ii. Using the Motor Drive
iii. Manual Adjustment with Motor Drive
i. Getting Started - Adjustments
ii. Polar Alignment
iii. Finding Celestial Objects
a. Northern Hemisphere (Polaris)
b. Southern Hemisphere (Star Drift)
i. Rough Alignment
ii. Star Drift Alignment
i. Setting the Hour Circle
ii. Using the Setting Circles
iii. Using the Motor Drive

4
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 Aurora 70 Refractor 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 AURORA TELESCOPE

5
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 AURORA TELESCOPE

6
USING YOUR
ZHUMELL AURORA 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.

7
SPECIFICATIONS FOR YOUR
ZHUMELL AURORA TELESCOPE
Type Refractor
Aperture (mm) 70
Focal Length 900
Limiting Magnitude 11.7
Focal Ratio f/12.9
Eyepiece Format 1.25”
Finderscope 5×24
Mount Type Equatorial
OPTICAL TUBE ASSEMBLY
MOUNT ASSEMBLY
Materials Aluminum
R.A. Adjustment Manual Worm Gear
Dec. Adjustment Manual Worm Gear
Clock Drive Axis R.A.
Clock Drive Power 2 - 9V Batteries

8
PARTS LIST FOR YOUR
ZHUMELL AURORA TELESCOPE
• Optical Tube Assembly (OTA)
• OTA Mounting Bracket
• 5x24 Finderscope
• Finderscope Mounting Bracket
• Equatorial Mount
• Adjustable Speed Motor Drive
• Right Ascension and Declination
Adjustment Cables
• Counterweight (with rod)
• Aluminum Tripod
• Accessory Tray
• Diagonal Lens
• 9mm and 20mm Kellner Eyepieces

9
1. Optical Tube Assembly (OTA)
2. OTA Mounting Bracket
3. Finderscope
4. Finderscope Mounting Bracket
5. Equatorial Mount
6. Adjustable Speed Motor Drive
LEGEND FOR YOUR
ZHUMELL AURORA TELESCOPE
7. Latitudinal Adjustment Screws
8. Base Mount Screw
9. Right Ascension Adjustment Cable
10. Declination Adjustment Cable
11. Hour Circle
12. Declination Circle
13. Counterweight
14. Aluminum Tripod
15. Accessory Tray (not pictured)
16. Diagonal Lens
17. Eyepiece
3
68
13
2
11
12
9
1
17
14
4
16
10
7
5

10
TRIPOD ASSEMBLY
STEP 1: Spread out the Tripod legs so that it can stand on its own. Attach the Accessory Tray to the three
connection points on the Tripod legs. Tighten using the thumbscrews on the attachment points.
STEP 2: Extend each leg one at a time using the large screws at the midpoint of the leg. Tighten each leg
at a height where you will be able to stand comfortably during the rest of assembly (just above waist-high).
Make sure they are tightened evenly so that the top of the Tripod is parallel to the ground.
ATTACHING THE EQUATORIAL MOUNT
STEP 1: Remove the Base Mount Screw from the bottom of the mount, leaving the attached washer in place.
Insert the mount into the hole in the middle of the tripod, and tighten underneath using the Base Mount Screw.
ASSEMBLY OF YOUR
ZHUMELL AURORA TELESCOPE
1
2

11
CONNECTING MOTOR DRIVE TO EQUATORIAL MOUNT
STEP 1: Remove the silver bolt head and washer located in the middle of the mount. Slide the L-shaped
bracket on the Motor Drive over the exposed bolt and screw the washer and bolt head securely over.
CONNECTING THE ADJUSTMENT CABLES TO THE
EQUATORIAL MOUNT
STEP 2: Loosen thumbscrew on the second (straight) bracket on the Motor Drive and slide onto corre-
sponding bolt about 2.5 inches up the mount. Securely fastening the Motor Drive in both of these locations
is essential to proper function.
STEP 1: Loosen the thumbscrew on the longer cable. This is the Right Ascension Adjustment Cable. Slide
it over the exposed bolt nearest the top of the mount and tighten with the attached thumbscrew. When in
place, it should be facing downward at an angle.
ASSEMBLY OF YOUR
ZHUMELL AURORA TELESCOPE
3
4

12
STEP 2: Loosen the thumbscrew on the shorter cable. This is the Declination Adjustment cable. Slide it over
the exposed bolt directly opposite the Motor Drive assembly and tighten with the attached thumbscrew.
When in place, it should be facing outward, parallel to the ground.
CONNECTING THE COUNTERWEIGHT
STEP 1: Slide the connecting rod through the
Counterweight body and tighten using the
attached thumbscrew.
STEP 2: Screw the connecting rod into the mount.
When in place, it should not move and should be
facing downward at an angle.
CONNECTING THE OTA MOUNTING BRACKET TO THE
EQUATORIAL MOUNT
STEP 1: Remove the (2) thumbscrews on the OTA Mounting Bracket and slide the exposed bolts through
the corresponding holes on the Equatorial Mount. Tighten both thumbscrews until secure.
ASSEMBLY OF YOUR
ZHUMELL AURORA TELESCOPE
5
6

13
STEP 1: Loosen the screw on the OTA Mounting Bracket and open it completely.
PLACING THE OTA INTO THE OTA MOUNTING BRACKET
STEP 2: Place the OTA into the OTA Mounting Bracket, supporting its weight with your hand. Close the
OTA Mounting Bracket over the OTA and tighten the screw until it is firm and secure.
ATTACHING THE FINDERSCOPE
STEP 1: Locate the two screws on top of the OTA near the lower end. Remove the heads of these
screws and place the Finderscope Bracket using the corresponding holes. Fasten securely with the heads.
ASSEMBLY OF YOUR
ZHUMELL AURORA TELESCOPE
7
7

14
STEP 2: Slide the Finderscope into the Finderscope Bracket with the smaller end pointing downwards.
Fasten into place using the three thumbscrews on the Finderscope Bracket. Fine-tuning adjustments
can be made later.
ATTACHING THE DIAGONAL LENS
STEP 1: Loosen the thumbscrew at the opening of the very bottom of your telescope. Slide the Diagonal Lens
in, silver side first, and tighten the thumbscrew until secure. Do not let go of the Diagonal Lens until the
thumbscrew has been fastened tightly.
USING AN EYEPIECE
STEP 1: You will need to attach an eyepiece to use your telescope. Choose one of the included
1.25-inch eyepieces and slide it into the Diagonal Lens, silver side first. Secure the connection using
the thumbscrew on the Diagonal Lens. Your telescope is ready to use!
ASSEMBLY OF YOUR
ZHUMELL AURORA TELESCOPE
8
9

15
Never look at the sun without using a solar filter. Do not use a regular eyepiece
as a solar filter. When using a solar filter, do not remove the full lenscap, view
only through the small opening. Looking at the sun without proper use of a
solar filter can cause permanent eye damage, included blindness.
Using your finderscope will help you locate celestial objects much more
quickly as the finderscope is equipped with a wider field of view than your
telescope. Simplify focusing while viewing by starting with the lowest-
power magnification and work up to the desired power.
When viewing faint deep-sky objects, images will not show color. The
human eye is not able to distinguish the differences in color found in such
dim images. The lack of color is due to human anatomy, not any limitations
of telescope construction.
CHECKING AND ALIGNING YOUR FINDERSCOPE
Finderscope alignment is the first step to fine-tuning your Aurora 70 setup
and viewing celestial objects. Follow these steps to properly set up and
align your finderscope.
1. Insert the lowest-power eyepiece into the Diagonal Lens. Focus
eyepiece to view an easily recognizable, stationary distant object like a
sign or lightpole.
2. Look through the finderscope, but be careful not to move the
telescope in any way. Adjust the finderscope focus by turning the
eyepiece of the finderscope back and forth until the image is in focus.
Check to see if the object viewed through your telescope eyepiece
is lined up at the center of the finderscope crosshairs. If not, your
finderscope must be re-aligned.
VIEWING THROUGH YOUR
ZHUMELL AURORA TELESCOPE

16
3. To align your finderscope, slightly loosen the thumbscrews which on the
finderscope bracket. Gently move the finderscope until the crosshairs are
centered on your object. Tighten the thumbscrews to secure the finderscope
in this position. It may take many tries to get it exactly right, but it will make
finding objects much, much easier when you’re ready to use your telescope.
USING THE MOTOR DRIVE
The motor drive included with your Aurora 70 telescope is designed to track the
movement of stars so you don’t have to. As long as your telescope is properly
polar aligned and the motor drive is properly used, it will help keep stars in your
field of view during long periods of viewing. When trying it out, don’t worry if it you
do not immediately see the telescope moving - stars appear to move very slowly
and the motion of your scope will be subtle. To test if your motor drive is working,
aim your telescope at a stationary object and turn on the motor drive. After 15
minutes, look through your telescope again - if it is no longer pointing exactly
where you originally aimed it, the motor drive is working.
MOTOR DRIVE SETTINGS
The motor drive features two controls that must be set depending on your
viewing location. The N-S Switch (North-South) is the hemisphere switch.
Northern Hemisphere viewers should set the switch to N and Southern
Hemisphere views should set the switch to S. The Speed setting should be
adjusted while viewing to help keep stars centered in your field of view. This
setting will need to be adjusted for each different celestial object you view. As a
general rule, the further from the celestial pole (closer to the horizon) an viewed
object is, the faster it will appear to move and the faster the Speed setting on the
motor drive will need to be.
VIEWING THROUGH YOUR
ZHUMELL AURORA TELESCOPE

17
MANUAL ADJUSTMENT WITH MOTOR DRIVE
The motor drive on your telescope should only be used for the subtle
motions needed to follow viewed objects. To point your telescope at
a different object elsewhere in the sky, you must disengage the motor
drive. To do so, loosen the thumbscrew on the motor drive R.A. (Right
Ascension) adjustment cable. This is the longer cable that is pointed
towards the ground. Disengaging the motor drive by loosening the R.A.
axis will prevent bending and breaking of the R.A. adjustment cable,
which will break the motor drive mechanism. When you are ready to
re-engage the motor drive, simply tighten the thumbscrew on the R.A.
adjustment cable and turn the motor drive on.
VIEWING THROUGH YOUR
ZHUMELL AURORA TELESCOPE
BEGINNING OBSERVATION - THE MOON
As you set out to begin viewing, one of the easiest and most enjoyable objects
to look at is the moon. Finding the moon and adjusting to view it is a good
way to acquaint yourself with the movements of your telescope. Follow these
steps carefully to gain a basic understanding of the adjustments you can make
to your scope.
To aim your telescope at the moon, you will have to adjust both the Right
Ascension and Declination. One at a time, make the following adjustments.
• Loosen the Base Mount Screw and swivel the telescope until it is pointed
in the direction of the moon. This is adjusting the Right Ascension.
• Loosen the Latitudinal Adjustment Screws (large silver screws near the
base of your mount) and adjust the angle of your telescope until it is
pointing up at the moon. This is adjusting the Declination.

18
While looking through the eyepiece, use the R.A. and Declination
adjustment cables to make smaller, more precise adjustments to the
position of your telescope. For best results, only adjust one axis at a time.
The adjustment cables feature stops which allow and a limited degree of
adjustment. To move past a stop, loosen the clamp for the axis you would
like to move and rotate the optical tube assembly past the stop. Be sure
to retighten the clamps before viewing.
If you notice resistance while moving the Optical Tube Assembly, try
adjusting the counterweight position up or down to properly balance the
telescope. The OTA should move very easily and smoothly - never try and
force the OTA to move as this can permanently damage your telescope.
Once you’ve located the moon and successfully pointed your telescope
at it, experiment with focusing and your different eyepieces. This will help
familiarize you with the different results you can get from your telescope.
BEGINNING OBSERVATION - THE MOON

19
INTERMEDIATE OBSERVATION - PLANETS
Once you’ve used your telescope to view the moon, you should
be familiar with the basic movements and adjustments you need.
Next stop: the planets. Not all the planets are visible from one area
at one time, so you’ll need to do a little research before you begin.
There are a number of online resources helpful for discovering
what planets and objects should be visible in your area on any
given night.
To find a planet, you must first locate it with the naked eye.
Once you’ve got its general location, point your telescope in
that direction and center the planet in the crosshairs of your
finderscope. Once the planet is lined up in the finderscope, begin
to view the planet through your telescope using the lowest power
(longest focal length) eyepiece. You may need to make slight
adjustments to the telescope aim and you will need to focus the
eyepiece to bring the planet into full view.
For a closer look at the planet, replace the low-powered eyepiece
with a higher-powered one and refocus your telescope.

20
ADVANCED OBSERVATION
GETTING STARTED - ADJUSTMENTS
Star charts and the setting circles are the key to taking your celestial
observation to the next step. They will allow you to find any known
celestial objects your telescope can see. By using the measurements
listed on the mount and the coordinates provided in a star chart, you will
be able to find stars, planets, nebulae, and galaxies. But before you can
properly use the Right Ascension and Declination coordinate system to
find these objects, you will need to Polar Align your telescope.
Before you begin Polar Alignment of your telescope, take a moment to
familiarize yourself with the various alignment scales and adjustments on
your Equatorial Mount. You can adjust Declination and Right Ascension
(astronomical equivalents to latitude and longitude), both in large-scale
movements and slow-motion fine-tuning movements. The procedure for
each is explained below.
• Large-scale movement along the longitudinal axis (Right Ascension)
is achieved using the Mount Base Screw. This is the lowermost knob
on your mount. Loosen the mount base screw and turn the entire
mount assembly and OTA together to face your telescope in a general
direction. Once your telescope is facing that direction, tighten the
mount base screw securely
• Broad movement along the latitudinal axis (Declination) is achieved
using the Latitudinal Adjustment Screws. These are the two large
silver screws near the bottom of your mount. Adjust declination by
loosening the screws, raising or lowering the angle of your scope, and
re-tightening the screws.