Coleman CDB767AZ1 Quick start guide

Please retain the packaging and instructions for further reference, as they contain important information.
CDB767AZ1
INSTRUCTIONS & OWNER’S MANUAL

INTRODUCTION:
Congratulations on your purchase of the precision crafted CDB767AZ1 COLEMAN
telescope. With the proper care and handling of your telescope, you will enjoy years of
viewing pleasure.
As an astronomical device, the CDB767AZ1 telescope has been designed for both a
beginner and advanced star gazer. It provides views of the moon and planets, as well
as dozens of galaxies, star clusters, and nebulae.
As a terrestrial (land) telescope, the CDB767AZ1 brings the world’s natural wonders
closer. It delivers superb scenic views and allows for observation of animals and
landscapes from a distance. To obtain the best performance from your telescope,
please carefully read this manual.
WARNING! DO NOT VIEW THE SUN THROUGH A TELESCOPE!
SERIOUS INJURY TO THE EYES MAY OCCUR
For use by an adult or under the supervision of an adult.

PARTS LIST FOR CDB767AZ1 Telescope:
!
WARNING!
CHOKING HAZARD
Small parts. Not suitable for
children under 3 years.
Specifications, colors, packaging, and/or contents of this manual are subject to change without notice.
3
J
E
K
B
H
C
D
G
G
G
H
A
F
I
A. Finderscope with bracket attached
B. Accessory Tray, screws (3) & wing nuts (3)
C. 2X Barlow
D. Eyepieces (K9, K25) Eyepiece Cases (2)
E. Yoke-to-Telescope Tube Attachment (2)
F. Yoke
G. Tripod leg attachment bolts and wing nuts
(3)
H. Tripod leg attachment bolts
I. Vertical fine adjustment rod
J. Telescope optical tube
K. Tripod
L. Astrowatch Software CD (not shown)

4
ASSEMBLY:
1) Carefully remove all parts from the cardboard cartons and lay them on a table,
floor or other flat surface in order to take an inventory of all the pieces. Keep your
box for storage or in case you ever need to ship your telescope.
2) Extend the legs, and lock each one at the desired height with the supplied tripod
adjustment knob (See Fig. 1).
(Fig. 1)
3) Connect all three tripod legs to the yoke with the supplied tripod leg attachment
bolts, washers, and nuts. Each leg has a hinged black metal flange located halfway
down its length. The legs should be positioned so that these hinged flanges are
facing the inside of the tripod. Note that there may be two black plastic spacers inside
the top sections of each leg (See Fig. 2).
(Fig. 2)
Azimuth Locking Knob

5
4) Slowly loosen the tripod leg adjustment knobs and gently pull out the lower section
of each tripod leg. Tighten the knobs to hold the legs in place. Spread the tripod legs
apart to stand the tripod upright. Adjust the height of each tripod leg until the tripod
head is properly leveled. Place the accessory tray on top of the bracket and secure with
the included screws and locking wing nuts from underneath the tray.
(See Fig. 3 and Fig. 4 below)
(Fig. 4)
5) After the nuts and bolts have been firmly tightened, the telescope optical tube
assembly can be attached to the yoke. The tube slips between the two uprights of the
U-shaped yoke. When the tube is securely in position cover one of the large plastic
knobs into the threaded socket and tighten. Repeat on the other side. See Fig. 5.
(Fig. 5)
(Fig. 3)

6
6) Locate the vertical fine adjustment rod. It is a chrome-plated metal rod about six
inches long. Insert the smooth end into the chromed holder located on the side of the
yoke (See Fig. 6). You may have to loosen the large plastic locking knob in order to
insert the adjustment rod. Once the rod is inserted (with the end with the hole facing the
focusing assembly), tighten the large locking knob just enough to prevent the rod from
falling out. Locate the chrome post on the side of the telescope tube near the focusing
assembly. Remove the screw from the post. Insert it through the hole in the end of the
vertical fine adjustment rod and into the post. Turn the screw clockwise until it is tight.
(Do not over-tighten.)
(Fig. 6)
7) Remove the finder scope and finder scope bracket from the box. Remove the two
knurled thumbscrews from the telescope main tube (See Fig. 7). Position the finder
scope bracket onto the telescope tube so that the holes in the base of the bracket
line up with the exposed holes in the telescope tube. Replace the two thumbscrews
and tighten securely (See Fig. 8). Insert the finder scope into the bracket and tighten
the knurled thumbscrews to keep the finder scope securely in place.
(Fig. 7) (Fig. 8)

7
8) Insert the K25 eyepiece into the eyepiece holder (See Fig. 9). Tighten the small
set screw to hold the eyepiece securely in place.
(Fig. 9)
9) A 2X Barlow lens is supplied to double the basic magnifying power provided by
any of the eyepieces. In viewing situations where very high magnifying powers are
desired, insert the 2X Barlow lens between the eyepiece and the focusing tube
(See Fig. 10).
(Fig. 10)

8
A. FINDER SCOPE ALIGNMENT:
B. COMPLETE THE FOLLOWING SETTINGS IN DAYLIGHT:
1) Insert the K25 eyepiece into the eyepiece holder. Look at an easily recognizable,
stationary object that is at least 300 feet away. Slightly loosen the two altitude control
locking knobs, the azimuth locking knob (See Fig. 2 on page 4), and the vertical fine
adjustment rod. Turn the telescope on both its horizontal and vertical axis until the
object is in the center of the field of view. Then bring the image into focus.
2) Firmly re-tighten the adjusting knobs and the vertical fine adjustment rod so that the
telescope is locked in position.
3) Look through the finder scope. If the object is not visible or centered in the finder
scope, simply release one of the three small adjusting screws holding the finder scope
and re-position the finder scope until the object is centered within the X-shaped
crosshairs.
4) All screws should be completely tightened as soon as the view through the finder
scope coincides with the view of the main telescope.
5) You may need to repeat this procedure to ensure a perfect alignment.
C.
The CDB767AZ1 telescope is fitted with an altazimuth mount. “Alt” refers to altitude, the
vertical movement of the telescope, while “azimuth” refers to the horizontal movement.
Note: Objects in the finder scope are upside down. This is normal and is
common to all astronomical telescopes.
Since a telescope by design has a narrow field of view, it can be challenging to locate
the particular object you wish to view. For this reason the telescope is fitted with a
low-power, wide-field miniature optical device called a finder scope. Always use your
finder scope to first locate the object you would like to view. The finder scope should
be aligned with the main telescope tube before you begin using the telescope, in
order that both the telescope and finder scope are positioned to provide exactly the
same angle and view.
THE ALTAZIMUTH MOUNT:

9
D. ABOUT MAGNIFICATION:
The magnification power of a telescope indicates how much an image is enlarged or
how big and close it appears to the viewer. The focal length of the eyepiece, combined
with the focal length of the telescope, determines the magnification power. To calculate
the power of your telescope with any particular eyepiece, simply divide the focal length
of the telescope (700mm) by the focal length of the eyepiece (indicated in “mm” on the
eyepiece collar).
Example: 700 mm focal length (tube)
9mm focal length (eyepiece)
The 2X Barlow lens and interchangeable eyepieces provide the following magnification
values:
EYEPIECE POWER Power With 2X Barlow Lens
K25 28x 56x
K9 78x 156x
When you are looking at astronomical objects, you are looking through a column of air
that reaches to the edge of space, and that column of air seldom stays still. Similarly,
when viewing over land (terrestrial viewing), you are often looking through heat waves
radiating from the ground, homes, buildings, etc. Your telescope may be able to
provide very high magnifications, but you often end up magnifying all the turbulence
between the telescope and the object you wish to view. The level of magnification
required depends on the object.
Optimal performance is obtained if the magnification is typically not more than about
30x for every 10mm of objective lens diameter. Another good rule of thumb is that the
usable magnification of a telescope is about 3x per mm of the aperture (for the
CDB767AZ1, the aperture is 76mm) under good conditions. Thus, magnification of
around 225x or less is ideal for a telescope with a 76mm diameter objective mirror
(aperture) and is best for observing most celestial objects. A lower magnification power
and a wider field of view are advisable for observing galaxies and nebulae. The highest
magnification power should be used for highly detailed observations of the moon,
Jupiter, Saturn, or any object that is quite bright.
The highest magnification power of the Barlow lens with a 4mm (not included) eyepiece
combination should only be used for large or bright objects such as the moon and the
brightest planets.
= 78x magnification power

10
E. ABOUT YOUR NEWTONIAN REFLECTOR TELESCOPE:
Your telescope is a Newtonian reflector. Light enters the open end of the tube and
travels down to the opposite end where it strikes a specially curved mirror, known as the
primary mirror. The focused image is reflected back up the tube to a small, flat mirror
near the open tube end, called the secondary mirror. This secondary mirror reflects the
focused image out through the side of the telescope tube to the eyepiece holder where
it is enlarged for viewing through the eyepiece.
The primary mirror is a precision ground and polished component
that is precisely positioned at one end of the optical tube. It is pre-
aligned for maximum performance at the factory and should not
need any adjustment. Therefore, never adjust or remove any of
the screws located at this end of the optical tube. Doing so will
void your warranty and affect or damage the performance of
your telescope (See Fig. 11).
(Fig. 11)
F. USING YOUR TELESCOPE:
1) It is recommended to use your telescope outside or at times through open windows.
Your view can be distorted by reflections in the glass of a closed window or at times
by air currents of differing temperatures passing through an open window.
2) Let your telescope adjust to the outside temperature. Your telescope will perform
much better if the temperature of the mirrors, eyepiece lenses, and the air inside the
tube are the same as the outside temperature. It may take up to 30 minutes to
equalize the temperatures when the difference in temperatures is extreme.
3) Find a location far from glaring light. If you live in an urban area, your viewing will
probably improve the farther you move away from the city’s lights. The sky glow of a
town or city can dramatically reduce the telescope’s performance and viewing
capabilities.

11
4) Remove the dust cap from the end of the telescope nearest the eyepiece holder and
the finder scope. The dust cap consists of two pieces—a small, removable center
piece and the large main cap (See Fig. 12). Both pieces should be removed (See
Fig. 13). The open end of the optical tube is pointed toward the subject you wish to
observe.
(Fig. 12) (Fig. 13)
5) Begin your viewing session by using only the K25 eyepiece. It will give you the
widest angle and the brightest, sharpest views. To adjust the angle of the telescope,
loosen the tightening screws on either side of the mounting yoke and the azimuth
locking knob (See Fig. 2 on page 4). If you wish to adjust the angle of the telescope
tube vertically in large increments, also loosen the tightening knob that holds the
vertical fine adjustment rod. For fine vertical motions, gradually tighten the knurled
knob on the vertical fine adjustment rod.
When possible, avoid sudden temperature changes, as the moisture in the air will
condense on the mirrors and eyepiece lenses. Should this occur after bringing your
telescope indoors, remove the dust caps and allow the moisture to evaporate naturally.
Point the telescope downward to minimize the collection of airborne dust. Once all of
the moisture has evaporated, replace the dust caps.
G. A NOTE ON TERRESTRIAL VIEWING:
You may notice that when you observe a terrestrial object on land or water it appears
upside down.
To correct this, a 1.5x Image Erecting Lens (not included) may be used with your
telescope. This accessory is inserted in the eyepiece holder of the telescope between
the eyepiece and the telescope. With the image erecting lens, objects will appear in
their proper orientation for terrestrial and land observation.

12
NOTE: Use of the 2X Brarlow lens with the 1.5 erecting lens is not recommended (See Fig.14.)
The image erecting lens provides 1.5x magnification, which means that the K25
eyepiece will magnify objects from 28x to 42x when used in conjunction with the image
erecting lens.
H. CARE AND CLEANING OF THE OPTICS:
The optical components of a telescope will get dirty over time. Dirt or dust on a lens
should be removed with the utmost care. A considerable amount of dirt or dust would
have to accumulate on the optical surface before your view would be compromised.
1) Keeping dust caps on during storage and transport will reduce dust collection.
2) Condensation may collect on the optical surfaces when the telescope is not in use.
Remove the dust caps and allow the moisture to evaporate naturally. Point the
telescope downward to minimize the accumulation of airborne dust.
3) Once all moisture has evaporated, replace the dust caps.
4) Filtered, compressed air may be used to remove surface dust from lenses and
mirrors. Remove the dust cap. Once removed, point the can away from the lens and
gently expel some air and any condensation or dust that has accumulated on the
discharge tube. Spray the lens or mirror with short bursts of air to carefully remove the
dust particles. Clean eyepieces and optical surfaces with special lens paper only.
Eyepieces should be handled with care. Avoid touching optical surfaces.
DO NOT HOLD THE TRIGGER OF THE COMPRESSED AIR CAN FOR EXTENDED
PERIODS BECAUSE PROPELLANT FROM THE CAN MIGHT ESCAPE AND
DAMAGE THE OPTICAL SURFACES.
(Fig. 14)

13
If, after several attempts, you cannot remove the particles, take the telescope to an
optical professional for cleaning. If you keep the dust caps on your telescope when it is
not in use and avoid handling the lenses or mirrors, only minimal optical maintenance of
your telescope should be required. Extensive cleaning is usually only necessary every
few years.
I. WHAT TO LOOK FOR IN THE NIGHT SKY:
There is a whole universe of objects you could view at night, so where do you start?
We recommend starting with the most prominent objects first.
The Moon
The moon is the easiest target to find at night. When the moon is in full position, it
bathes the night with a silvery light that washes the sky of all but the brightest objects.
The best time to view the moon is not when it is full, but rather when it is less than half
full. The dividing line between dark and light on the moon, called the terminator, shows
the best detail in the craters and mountains.
The Planets
The planets, our solar system companions, range in size and substance from moon-size
rocky bodies to giant gas balls, which could hold Earth 1,000 times over. To find the
planets, you will need information about their times of visibility. The included
Astronomical Software CD or an astronomy magazine will give you the locations of the
planets as they change position from month to month. The Internet is also an excellent
source of information, offering star charts, maps, and more!
The popular and more familiar constellations often provide the easiest landmarks to
help find the planet’s locations and paths of orbit. Most people have looked up at the
sky at night and seen some of the planets without even realizing it. A planet looks like a
bright star but does not twinkle like a star does; it looks like a tiny ball. Venus, Mars,
Jupiter, and Saturn are the easiest planets to view. Mercury is dimmer, usually below
the horizon, and more challenging to find.
Each of the planets provides interesting views. Venus is covered with clouds so all that
is visible is an extremely bright light, the brightest next to the moon. However, Venus,
like the moon, goes through phases. As it travels around the sun, different areas of its
surface are illuminated, producing crescent shapes of varying sizes. Mars is the red
planet. When it is above the horizon, it is noticeably red and stands out like a beacon in
the night sky. The apparent brightness of Mars varies as the planet orbits around the
sun and throughout its period of visiblity, it will look brighter or dimmer depending on its
distance from Earth.

14
Jupiter is the largest planet in our solar system and the second brightest next to Venus.
Jupiter has many moons, four of which are often visible through your telescope when
viewing conditions permit. As you watch them throughout the evening, you will see that
they change position relative to each other and to Jupiter. It is possible with careful
planning to actually see one of the moons disappear either in front of or behind Jupiter
as it orbits around the planet. Another great feature of Jupiter is its cloud belt. Jupiter is
alive with weather activity and its clouds have formed over time into belts visible through
telescopes in the right atmospheric conditions.
Saturn, the second largest planet, is not as bright as Jupiter and so its moons are not as
visible through small telescopes. The large rings that encircle Saturn are spectacular to
observe, however. The planet and its rings appear pale yellow. The major division in the
rings, the Cassini division, is possible to see if you keep the telescope firmly in position.
Uranus and Neptune are the last of the solar system’s gas giants. They do not provide
as spectacular a sight as Jupiter or Saturn, but are nonetheless rewarding to see.
Beyond our solar system there are many more objects to be found. Galaxies,
nebulae, and star clusters abound!
J. ABOUT THE INCLUDED ASTRONOMY SOFTWARE CD:
Navigate the heavens like the professionals. TheSkyX First Light Edition makes an
ideal companion to best enjoy your new telescope. Its intuitive user-interface always
keeps you grounded while exploring the wonders of the night sky. Point and click to
learn the names and coordinates of celestial objects. Quickly create observing lists of
the interesting objects that are visible from your backyard with the What’s Up? feature.
Print finder charts to assist locating those faint, fuzzy objects in the eyepiece. Zoom in
for up-close views of the planets, including the Moon, and Jupiter and Saturn’s major
moons. Watch animated tours demonstrating fascinating astronomical phenomena.
A descriptive digital user guide offers helpful tips, and in-depth descriptions on hun-
dreds of celestial wonders offer hours of edutainment for you and your family.

15
K. FREQUENTLY ASKED QUESTIONS:
1) How far can I see?
If you stand outside and look up at the night sky on a clear evening, you can see
hundreds of stars without the aid of your telescope. The telescope is a light-gathering
instrument that magnifies the view—providing significantly more detail and unveiling
more stars, nebulae, and celestial objects. With the aid of a telescope, you will be able
to enjoy exciting views of Saturn’s rings, Jupiter’s major moons, the Orion Nebula, and
much more.
2) Why can’t I see anything through my telescope?
If you see only gray or black when looking through your telescope, even after searching
for an object to view, it is very likely that you are using an eyepiece that is too powerful.
To solve this problem always start with the lowest power eyepiece at first, and only
insert the higher-power eyepiece after you have located an object.
3) When I use my high-power eyepiece, everything looks much darker. Why?
As magnification in a telescope increases, brightness diminishes. Conversely,
brightness increases when magnification is reduced. If an image appears too dark or
unclear, use a lower-powered eyepiece. Views of small, bright objects are superior to
those of large, dark, or blurry ones! Atmospheric conditions, air currents, as well as light
and air pollution also affect viewing quality.
4) As I look through my telescope, why do objects in the sky appear to move?
The constant rotation of the Earth makes things appear to move. Lower-power
eyepieces will reduce this effect of movement considerably and allow you to observe an
object for a longer duration before you have to readjust your telescope.
6) Whom do I contact for more information and product questions?
For any inquiries, parts, warranty or service information, please contact:
Phone: [phone]
212-947-7100
e-mail: [email protected]m or [e-mail]
Visit our website at www.colemanoptics.com

16
Elite Brands Inc.
40 Wall Street 61st Flr.
New York, NY 10005
Tel: [phone]
©2018 Elite Brands Inc., New York, NY 10005
©2018