Celestron 21013 Telescope User Manual

 Firstscope 80 AZ
Firstscope 102 AZ
Refracting Telescopes
Model #21083
Model #21013
ASSEMBLING YOUR TELESCOPE
FIRSTSCOPE AZ TELESCOPE
The Firstscope AZ telescopes are refractor telescopes offered on an Altazimuth
mount. The telescope is shipped in one box which contains the optical tube, altazi-
muth mount and all the standard accessories, which include:
*20mm Ocular 1-1/4"
* 10mm Ocular 1-1/4" (80mm model)
* Star Pointer Finderscope (80mm model)
* 6x30Finderscope (102mm model)
*45° Erect Image Diagonal 1-1/4"
* Slow Motion Controls
* Adjustable Aluminum Tripod
* Accessory Tray
Use the accompanying diagram (on page 3) to identify the various parts of your
telescope for assembly and ongoing use.
Unpacking Your | When setting up the telescope, find a large, clear area where the parts can be laid out.
Firstscope AZ Remove the contents of the box and place them neatly on your work surface. Once
your refractor has been unpacked and assembled, you will not need the boxes for
everyday storage and transportation. However, you should save the box in case you
need to ship your telescope via a common carrier.
To begin setting up your Firstscope AZ, start with the tripod and work up from
there.
|
Attaching the Mount Locate the Altazimuth mount and the tripod legs along with the tripod mounting
| hardware and the tripod accessory tray.
1. Slide the two top portions of each tripod leg around the sides of each flange on the
tripod head of the mount, so the flange is secured between them.
2. Slide the screw through the tripod leg and flange, until the screw extends out the
other side.
3. Slide the washer and the nut over the screw and tighten. This can be left slightly
loose, to allow for positioning the legs later, when attaching the accessory tray.
4. Repeat this process for the remaining two legs. Now the tripod will stand by itself.
О)
Setting Up the Tripod
1 Set the tripod with the Altazimuth mount attached in the standing position by
speading the legs apart far enough for the tripod accessory tray to fit.
2 You are now ready to install the tripod accessory tray. The tripod tray fits over the
holes in the tripod leg brace. Insert the winged bolts through the holes in the
bottom of the tripod leg brace and thread them into the holes in the accessory tray.
3 Tighten all bolts to ensure proper stability.
FIRSTSCOPE AZ
Telescope Lens Shade
Optical Tube
Mounting
Focuser
45° Erect
Image Diagonal
Pyopiece Goes _— Eo
Accessory
Adapter
Focus Knob
Altitude Slow MEA
Motion Control -—— ——— O
Knob (longer cable) a >
O | Head |
Azimuth Slow | Tripod
Motion Control | Azimuth
Knob (shorter cable) Tension
Knob
Figure 2-1
The Firstscope AZ fully assembled. Use this illustration and others throughout this manual, to famil-
iarize yourself with the various parts of your Firstscope AZ telescope.
DE With the tripod set up, you can adjust the height of the tripod. To do this:
Adjusting the Tripod |
Height 1 Loosen the tightening screw on the lower portion of the tripod leg.
2. Slide the center slat of the leg away from the tripod head until at the desired
height.
3. Tighten the screw (completely) to hold the leg firmly in place.
Repeat this process for each tripod leg.
Slow
Motion
Shaft
Set
Screw
|
Metal
Slow Sleeve
Motion
Cable
Figure 2-2
This illustration shows the
correct orientation of the
metal sleeve relative to the
slow motion shaft.
Attaching the Telescope
to the Mount
You are ready to attach the slow motion control knobs.
1. Retract the set screw on the metal sleeve of the slow motion control knobs until
it no longer extends into the inner diameter. The metal sleeve 1s on the opposite
end of the cable from the slow motion knob.
2. Slide the end of the metal sleeve over one of the two shafts protruding
from the mount. Make sure that the set screw on the metal sleeve is over the flat
part of the shaft (see figure 2-2).
The shaft on the right side of the telescope platform controls altitude adjust-
ments while the one on the left controls azimuth adjustments (see figure 2-3).
3. Tighten the set screws to hold the slow motion control cables in place.
Altitude Adjustment
Shaft
Azimuth
Altitude Slow == | Adjustment
Motion Knob A Shaft
fo:
Azimuth Slow
Motion Knob
Figure 2-3
The optical tube is held to the mount with two mounting rings. On the bottom of
the mounting rings are square extrusions — one on each ring. This portion of the
ring sits on top of the mounting platform to hold the telescope in place.
1. Slightly loosen the screws that hold the mounting rings on the telescope in
place.
2. Slide the rings apart so that each is at the same distance as the holes in the
mounting platform.
3. Place the telescope tube on the mount and orient it so that the objective lens is
opposite the slow motion control handles.
4. Align the holes on the square extrusions with the holes at the ends of the
mounting platform.
6.
Pointing the
AZ Telescope
Starting with the ring closest to the objective lens, insert the bolt through the
hole in the mounting platform and thread it into the mounting ring (C). Repeat
this process for the remaining mounting ring.
Tighten the screws that hold the mounting rings in place (A and B). This will
keep the telescope from sliding back and forth in the mounting rings.
The Altazimuth mount can be moved in two directions; vertically, which is called
SE
Extrusion
A
+
Mounting
Platform
AE =
~
Figure 2-4
Orient the altazimuth mount so that it is parallel to the ground while
mounting the telescope tube.
altitude and horizontally, which 1s called azimuth.
Altitude
For major directional changes in altitude, hold the end of the telescope tube and
move the telescope to the desired orientation.
For fine adjustments in altitude, turn the slow motion control knob on the right
side of the mount. Turning the knob clockwise lowers the angle at which the
telescope is aiming while turning it counterclockwise raises the angle at which
the telescope 1s aiming.
Azimuth
For major directional changes in azimuth, loosen the azimuth tension knob on
the right side of the mount. (This knob is already attached to the mount and
does NOT need to be installed.) Once loose, point the telescope to the desired
area and tighten the azimuth tension knob.
For fine adjustments in azimuth, turn the slow motion control knob on the left
side of the mount. Turning the knob clockwise moves the telescope to the right
while turning it counterclockwise moves the telescope to the left.
NOTE: The azimuth slow motion knob will NOT work while the azimuth tension knob 15
loose. The azimuth tension knob must be fully tightened before you can use the
azimuth slow motion control knob.
EEE Once assembled, the telescope can be left set up. The entire unit is light enough to
Disassembling and pick up and carry outside for a casual observing session. If, however, you want to
Transporting Your transport your Firstscope AZ to a remote observing location, you should partially
Firstscope AZ disassemble your telescope for easy transportation.
1. Remove the optical tube from the altazimuth mount. Wrap the tube in cloth to
prevent it from being scratched or dented. Perform the steps for attaching the
telescope in reverse order.
2. Fold the tripod legs together. The mount does NOT have to be removed if you
are transporting the telescope yourself.
You are now ready to transport the telescope to your observing site.
If you are shipping the telescope via a common carrier, you should completely
disassemble the telescope and return all parts to the original shipping con-
tainer.
TELESCOPE BA
рН
Attaching the
Accessories
Once your telescope has been fully assembled, you are ready to attach the accesso-
ries.
The Accessory Adapter
The accessory adapter is the short black tube with the set screw that allows the
attachment of visual accessories (i.e., the star diagonal, erect image diagonal,
eyepieces, etc.). The accessory adapter comes attached to the focus tube and 1s
removed only when attaching photographic accessories.
[as ОАК АРООБЧНЕН НОННА НОНО ОИОННОООАНННННИАЕОНННЕНЫЙ
Erect Image Diagonal
The diagonal diverts the light at a right angle from the light path of the telescope.
For astronomical observing, this allows you to observe in positions that are more
comfortable than if you were to look straight through. The erect image diagonal 15 а
prism that diverts the light at a 45° angle to the light path of the telescope. In —
addition to placing the eyepiece in physically comfortable viewing positions, this
accessory also provides correctly oriented images. To attach the diagonals:
Eyepiece
45° Erect сы 1
Image Diagonal FORTE
Figure 2-5
1. Loosen the thumbscrew on the accessory adapter until it no longer obstructs the
inner diameter.
2. Slide the chrome portion of the erect image diagonal into the accessory adapter.
3. Tighten the thumbscrew on the accessory adapter to hold the diagonal in place.
If you wish to change the orientation to the erect image diagonal, loosen the thumb-
screw on the accessory adapter until the diagonal rotates freely. Move the diagonal
to the desired position and tighten the thumbscrew.
Focusing
The Eyepieces
The eyepiece, or ocular, is an optical element that magnifies the image focused by the
telescope. The eyepiece(s) fit into either the accessory adapter directly or into the
diagonal. To install an ocular:
1. Loosen the set screw on the diagonal so that it does not obstruct the inner
diameter.
2. Slide the chrome portion of the eyepiece into the diagonal.
3. Tighten the set screw.
To remove the ocular:
1. Loosen the set screw on the diagonal.
2. Slide the eyepiece out of the diagonal.
You can replace it with another ocular.
Eyepieces are commonly referred to by focal length, which ts printed on the eyepiece
barrel. The longer the focal length (i.e., the larger the number) the lower the power.
Conversely, the shorter the focal length (i.e., the smaller the number) the higher the
magnification. Generally, you will use low to moderate power when viewing. For
more information on how to determine power, see the section on “Calculating
Magnification.”
To focus your telescope, simply turn either of the focus knobs located directly
opposite the finderscope. Turn the focus knob until the image is sharp. Once
sharp, turn the knob towards you to focus on an object that is closer than the
one you are currently observing. Turn the knob away from you to focus on a
more distant object than the one you are currently observing.
In addition to understanding how the focusing mechanism works, there are a
few focusing hints to remember when using any optical instrument.
Avoid looking through glass. Glass found in household windows is optically
imperfect, and as a result, may vary in thickness from one part of a window
to the next. This inconsistency can and will affect the ability to focus your
telescope. In most cases, you will not be able to achieve a truly sharp
focus. In some cases, you may actually see a double image.
Never look across or over objects producing heat waves. This includes
asphalt parking lots on hot summer days or building rooftops.
+ Hazy skies, fog, and mist can also make it difficult to focus when viewing
terrestrially. The amount of detail that can be seen under these conditions
will be greatly reduced. Also, when photographing under these conditions,
the processed film may come out a little grainier than normal.
* When using your telescope as a telephoto lens, the split screen or microprism
focuser of the 35mm camera may “black out.” This is common with all long
focal length lenses. If this happens, use the ground glass portion of your focus-
ing screen. To achieve a very sharp focus, you may consider using a focusing
magnifier. ‘These are readily available from your local camera store. |
If you wear corrective lenses (specifically glasses), you may want to remove
them when observing with an eyepiece attached to the telescope. However,
when using a camera, you should always wear corrective lenses to ensure
the sharpest possible focus. If you have astigmatism, corrective lenses
o [11 U ST be worn at all times.
The Star Pointer
Finderscope (80mm
Model Only)
The Star Pointer is the quickest and easiest way to point your telescope exactly at a
desired object in the sky. It’s like having a laser pointer that you can shine directly
onto the night sky. The Star Pointer is a zero magnification pointing tool that uses a
coated glass window to superimpose the image of a small red dot onto the night sky.
While keeping both eyes open when looking through the Star Pointer, simply move
your telescope until the red dot, seen through the Star Pointer, merges with the object
as seen with your unaided eye. The red dot is produced by a light-emitting diode
(LED); it is not a laser beam and will not damage the glass window or your eye. The
Star Pointer comes equipped with a variable brightness control, two axes alignment
control and a quick-release dovetail mounting brackets. Before the Star Pointer 1s
ready to be used, it must be attached to the telescope tube and properly aligned:
Installing the Star Pointer
The Star Pointer comes attached to a bracket that installs to the focuser end of the telescope
tube. Orient the Star Pointer on the telescope tube so that the glass window is facing
towards the objective lens end of the tube.
To attach the Star Pointer Finderscope on the F80:
1. Slide the Star Pointer bracket into the dovetail mounting platform on top of the
focuser assembly. |
2 Orient the Star Pointer so that the glass window is facing towards the front of
the tube.
3 Secure the Star Pointer bracket by tightening the thumb screw on the
mounting platform.
The Star Pointer is powered by a long life 3-volt lithium battery (#CR2032) located
underneath the front portion of the Star Pointer. Like all finderscopes, the Star
Pointer must be properly aligned with the main telescope before it can be used. This
is a simple process using the azimuth and altitude control knobs located on the side
and bottom of the Star Pointer. The alignment procedure is best done at night since
the LED dot will be difficult to see during the day.
To turn on the Star Pointer, rotate the variable brightness control clockwise until you
here a “click”. To increase the brightness level of the red dot, continue rotating the
control knob about 180° until it stops.
Locate a bright star or planet and center it in a low power eyepiece in the main
telescope.
With both eyes open, look through the glass window at the alignment star.
If the Star Pointer is perfectly aligned, you will see the red LED dot overlap the
alignment star. If the Star Pointer is not aligned, take notice of where the red dot 1s
I
6x30 Finderscope
(102mm Model)
relative to the bright star.
Without moving the main telescope, turn the Star Pointer’s azimuth and altitude
alignment controls until the red dot is directly over the alignment star.
If the LED dot is brighter than the alignment star, it may make it difficult to see the
star. Turn the variable brightness control counterclockwise, until the red dot is the
same brightness as the alignment star. This will make 1t easier to get an accurate
alignment. The Star Pointer is now ready to be used . Remember to always turn the
power off after you have found an object. This will extend the life of both the battery
and the LED
The 102mm AZ comes with a 6x30 finderscope that attaches to a dovetail mounting
platform on the focuser assembly. The finderscope has a spring-loaded adjustment
screw that puts pressure on the finderscope while the remaining screws are used to
adjust the finder horizontally and vertically. To install the finderscope onto the
telescope you must first mount the finderscope through the finder bracket and then
attach 1t to the telescope.
Slide the rubber O-ring over the eyepiece end of the finderscope and roll it
2/3 of the way up the finderscope. |
2. Insert the eyepiece end of the finderscope through the bracket until the O-
ring presses tightly between the finder and the inside of the bracket.
Tighten the adjustment screws until they make contact with the finderscope
body.
Finderscope
Finder
Bracket
To align the finderscope:
1. Choose a target that is in excess of one mile away. This eliminates any possible
parallax effect between the telescope and finder.
2. Center your target in the main optics of the telescope. You may have to move
the telescope slightly to center it.
3. Adjust the screw on the finder bracket that is on the right (when looking
through the finder) until the cross hairs are centered horizontally on the target
seen through the telescope.
4. Adjust the screw on the top of the finder bracket until the cross hairs are
centered vertically on the target seen through the telescope. |
Image orientation through the finder is inverted (i.e., upside down and backwards
left-to-right). This is normal for any finder that is used straight-through.
10
Calculating
, - You can change the power of your Celestron telescope just by changing the
Magnification
eyepiece (ocular). To determine the actual magnification with any given eyepiece,
simply divide the focal length of the telescope by the focal length of the eyepiece.
In equation format, the formula looks like this:
Focal Length of Telescope (mm)
Magnification =
Focal Length of Eyepiece (mm)
Let's take an example (using the 80mm AZ) to see how this formula works. Let's say
you're observing with a 20mm eyepiece. To determine the magnification, you
would simply divide the focal length of the telescope (900mm) by the focal length
of the eyepiece. Since we are using a 20mm eyepiece for our example, you would
divide 900 by 20. This yields a magnification of 45 power.
Although the power is variable, each instrument has a limit to the highest useful
magnification. The general rule is that 60 power can be used for every inch of
aperture. For example, the Firstscope 80 AZ is 3.14" (80mm) in diameter. Multiply-
ing 3.14" by 60 gives a maximum useful magnification of 188 power. Although this
is the maximum useful magnification, most observing is done in the range of 10 to
30 power for every inch of aperture which is about 30 to 100 power for the
Firstscope 80 AZ.
Higher powers (more than 60x the diameter) can be used for looking at super enlarged
images of the planets and the moon, but the images will be dark with little contrast,
and somewhat fuzzy.
EE AE
With the telescope fully assembled and all the accessories attached, you are ready
Your First Look for your first look. Your first look should be done in the daytime when it will be
easier to locate the locking clamps and adjustment knobs. This will help to familiar-
ize you with your telescope, thus making it easier to use at night.
Daytime Observing
1. Find a distant object that is fairly bright.
2. Insert the standard 20mm eyepiece into the diagonal.
3. Locate the object in the finderscope.
4. Use the slow motion knobs to center the object in the field of the finder.
5. Look through the main optics and the object will be there (if you aligned the
Star Pointer first).
Try using different optional eyepieces to see how the field changes with various
magnifications.
WARNING! | NEVER POINT YOUR TELESCOPE AT THE SUN UNLESS YOU HAVE THE
PROPER SOLAR FILTER. PERMANENT AND IRREVERSIBLE EYE DAM-
AGE MAY RESULTAS WELL ASDAMAGE TO YOUR TELESCOPE. ALSO,
NEVER LEA VE YOUR TELESCOPE UNATTENDED DURING A DAY TIME
OBSERVING SESSION, ESPECIALLY WHEN CHILDREN ARE PRESENT.
У
11
WARNING! |
Although overlooked by many amateur astronomers, solar observation is both
rewarding and fun. However, because the Sun is so bright, special precautions must
be taken when observing our star so as not to damage your eyes or your telescope.
Never project animage of the Sun through the telescope. Tremendousheat build-up
near the back of the telescope can damage any accessories attached to the
telescope.
Use a Celestron solar filter to view the Sun in complete safety. These filters reduce
the intensity of the Sun’s light making it safe to view. With these filters you can see
sunspots as they move across the solar disk and faculae, which are bright patches
seen near the Sun’s edge. Do not look through the Star Pointer finderscope while
pointed towards the Sun. Instead, look at the ground at the shadow cast by the
finder and position the telescope until the shadows are concentric.
In the night sky, the Moon is a prime target for your first look because it is ex-
tremely bright. Often, it is a temptation to look at the Moon when it is full. At this
time, the face we see is fully illuminated and its light can be overpowering. In
addition, little or no contrast can be seen at this time.
Observing the Sun,
Moon, and Planets
Observing Deep-Sky
Objects
One of the best times to observe the Moon is during its partial phases (around the
time of first or third quarter). Long shadows reveal a great amount of detail on the
lunar surface. At low power you will be able to see the entire lunar disk at one time.
Change to higher power (magnification) to focus in on a smaller area. Keep in mind
that the rotation of the Earth will cause the Moon to drift out of your field of view.
You will have to manually adjust the telescope to keep the Moon centered. This
effect is more noticeable at higher power. Consult your local newspaper or current
astronomy magazine to find out when the Moon is visible.
This same method can be used to observe the planets. You can see Venus go
through its lunar-like phases. Mars will reveal a host of surface detail and one, if not
both, of its polar caps. You will be able to see the cloud belts of Jupiter and the
great Red Spot. In addition, you will also be able to see the Moons of Jupiter as
they orbit this gas giant. Saturn with its beautiful rings is easily visible at moderate
power. All you need to know is where to look. Most astronomy publications tell
where the planets can be found in the sky each month.
Deep-sky objects are simply those objects outside the boundaries of our solar
system. They include star clusters, planetary nebulae, diffuse nebulae, double stars
and other galaxies outside our own Milky Way. The Celestron Sky Maps (#93722)
can help you locate the brightest deep-sky objects. You can “star hop” to an object
from an area with which you are familiar. Most deep-sky objects have a large
angular size. Therefore, low-to-moderate power is all you need to see them. Visu-
ally, they are too faint to reveal any color. Instead, they have a black and white
appearance. And, because of their low surface brightness, they should be observed
from a dark sky location. Light pollution around large urban areas washes out most
nebula making them difficult, if not impossible, to observe. LPR filters enhance
deep sky viewing from light polluted areas by blocking unwanted light while
transmitting light from certain deep-sky objects. You can, on the other hand,
observe planets and stars from light polluted areas or when the Moon is out.
12
Photographing the
Moon
Your Celestron can be used for both terrestrial and astronomical photography. You
can use your telescope as a high power telephoto lens with the use of the optional T-
Adapter. The Firstscope can also be used as a stable mount by attaching a camera to
the photo adapter screw on the top of the tube ring. Celestron telescopes have fixed
apertures and, as a result, fixed f/ratios. To properly expose your subjects photo-
graphically you need to set your shutter speed accordingly. Most 35mm cameras
offer through-the-lens metering which will let you know if your picture will be
under or over exposed. This is more of a consideration when doing terrestrial
photography where exposure times are measured in hundredths of a second. In
astrophotography, the exposures are much longer requiring that you use the “B”
setting on your camera. The actual exposure time 1s determined by how long you
keep the shutter open.
To reduce vibration when tripping the shutter, use a cable release. Releasing the
shutter manually can cause vibration, something that can produce unsharp photos.
A cable release will keep your hands clear of the camera and telescope, thus elimi-
nating the possibility of introducing vibration. Mechanical shutter releases can be
used, though air type releases are best. |
After looking at the night sky for a while you may want to try photographing it. If
you do, start with a nice, bright object like the Moon.
Load your camera with film that has a moderate-to-fast speed (1.e., ISO rating).
Faster films are more desir-
able when the Moon 1s a
crescent. When the Moon is
full, and at its brightest,
slower films are more
desirable. If photographing
during the full phase, use a
yellow filter to reduce the
light intensity and to increase
contrast. To attach your
camera to the telescope you
will need the Celestron T-
Adapter (#93634-A) and the
T-Ring for your specific
camera.
Consult the Celestron |
accessory catalog for a list of recommended exposure times. These exposure times
should be used as a starting point. Always make exposures that are longer and
shorter than the recommended time. Also, try bracketing your exposures. Take a
few photos at each shutter speed. This will ensure that you will get a good photo.
Keep accurate records of your exposures. This information 1s useful if you want to
repeat your results or submit them for possible publication in astronomical maga-
zines!
13
TELESCOPE MAINTENANCE
Care and Cleaning of
the Optics
Storing Your Telescope
Refractors are generally very low maintenance telescopes. Cleaning is really
all that is needed, and even that is minimal if the telescope is stored properly.
Occasionally, dust and/or moisture may build up on the objective lens of your
telescope. Special care should be taken when cleaning any instrument so as
not to damage the optics. If dust has built up on the objective lens, remove
dust with a camel’s hair brush or a can of pressurized air. Spray at an angle to
the lens for approximately 2 to 4 seconds. Then, use optical cleaning solution
and white tissue paper to remove any remaining debris. Strokes should go
from the center of the objective lens to the outer portion. Do NOT rub in
circles! With refractive lenses, never apply the cleaning solution directly to the
lens. Because the elements are air-spaced, excess solution may seep
between the lenses. Apply the solution to the tissue, then the tissue to the
lens.
You can use commercially made lens cleaner or mix your own. A good
cleaning solution 1s isopropyl alcohol mixed with distilled water. The solution
should be 60% isopropyl alcohol and 40% distilled water. Or, liquid dish soap
diluted with water (a couple of drops per one quart of water) can be used.
Occasionally, you may experience dew build-up on the objective lens of your
telescope during an observing session. This may be removed with a hair dryer
or by pointing the telescope at the ground. Since your Celestron refractor has
a built-in dew cap, the dewing process is slightly reduced. If moisture con-
denses on the inside of the lens, remove the accessories from the telescope.
Place the telescope in a dust-free environment and point it down. This will
remove the moisture from the telescope tube.
To minimize the need to clean your telescope, replace all lens covers once you
“have finished using it. Since the back of the telescope where the accessories
attach 1s NOT sealed, the plastic cap should be placed over the opening when
not in use. This will prevent contaminates from entering the optical tube.
When not in use, your Firstscope AZ can be left fully assembled and set up.
However, all lens and eyepiece covers should be put back in place. This will
reduce the amount of dust build-up on the optical surfaces and reduce the
numbers of times you need to clean the instrument. You may want to return
everthing to its original shipping container and store them there. If this is the
case, all optical surfaces should still be covered to prevent dust build-up.
14
Technical Specifications Below is pertinent technical information on your Firstscope AZ telescope
that you may find useful.
Firstscope 80 - AZ Firstscope 102 - AZ
Optical System: Refractor-Achromat Refractor-Achromat
Aperture: 80mm (3.14) 102mm 4")
Focal Length: 900mm 35.4") - 500mm(19.7")
Highest Useful Power
Magnification: 189x 240x
Resolution (arc seconds) -
Dawes: 145 | 1.14
Light Gathering Power: 131x 212x
Limiting Visual Magnitude: 12.0 12.5
Angular Field of View in Degrees
(with20mm eyepiece): 1.29 2.09
Linear Field of View —
(with standard eyepiece): 63’ | 105'
F/ratio: f/11 1/5
Length: | 36" | 21"
Weight:
Optical Tube: 5.51b. 51b.
With Tripod: 181b. 17.51b.
All specifications are stated for the telescope using the standard accessories.
These specifications are approximate and subject to change without notice.
Note
Celestron offers a large assortment of accessories for this telescope:
Optional Access ories Barlow Lens - A Barlow lens is a negative lens that increases the focal length of a
telescope. Used with any eyepiece, it doubles the magnification of that eyepiece.
Celestron offers two Barlow lens in the 1-1/4". The 2x Ultima Barlow (#93506) is a
compact triplet design that is fully multicoated for maximum light transmission and
parfocal when used with the Ultima eyepieces. Model #93507 is a compact achromatic
Barlow lens thatis under three inches long and weighs only 4 oz. It works very well with
all Celestron eyepieces. :
Eyepieces - Like telescopes, eyepieces come in a variety of designs. Each design has
its own advantages and disadvantages. For the 1-1/4" barrel diameter there are four
different eyepiece designs available. |
« Super Modified Achromatic (SMA) Eyepieces: 1 1 4". The SMA designis animproved
version of the Kellner eyepiece. SMAs are very good, economical, general purpose
eyepieces that deliver a wide apparent field, good color correction and an excellent
image at the center of the field of view. Celestron offers SMA eyepieces in 1-1/4" sizes
in the following focal lengths: 6mm, 10mm, 12mm, 17mmand 25mm.
Plossl - Plossl eyepieces have a4-elementlens designed for low-to-high power observing.
The Plossls offer razor sharp views across the entire field, even at the edges! In the 1-
1/4" barrel diameter, they are available in the following focal lengths: 3.6mm, 6mm,
8mm, 10mm, 13mm, 17mm, 25mm, 32mm and 40mm.
15
*Ultima - Ultima is not really a design, but a trade name for our 5-element, wide field
eyepieces. Inthe 1-1/4" barrel diameter, they are available in the following focal lengths:
5mm, 7.5mm, 12.5mm, 18mm, 24mm, 30mm, 35mm, and 42mm. These eyepieces are
all parfocal. The 35mm Ultima gives the widest possible field of view with a 1-1/4"
diagonal.
Eyepiece Filters - To enhance your visual observations of solar system objects,
Celestron offers a widerange of colored filters that thread into the 1- 1/4" oculars.
Available individually are: #12 deep yellow, #21 orange, #25 red, #58 green,
#80A light blue, #96 neutral density - 25%T, #96 neutral density - 13%T, and
polarizing. These and other filters are also sold in sets.
Night Vision Flashlight - (#93588) - Celestron” s premium model for astronomy,
using two red LEDs to preserve night vision better than red filters or other
devices. Brightness is adjustable. Operates on a single 9 volt battery.
Moon Filters (#94119-A) - Celestron’s Moon Filters is an economical eyepiece
filter for reducing the brightness of the moon and improving contrast, so greater
detail can be observed on the lunar surface. The clear aperture is 21mm and the
transmission is about 18%. |
Planisphere (#93720) - A simple and inexpensive tool for all levels of observers,
from naked eye viewers to users of highly sophisticated telescopes. The
Celestron Planisphere makes it easy to locate stars for observing and is a great
planet finder as well. A map ofthe night sky, oriented by month and day, rotates
within a depiction of the 24 hours of the day, to display exactly which stars and
planets will be visible at any given time. Ingeniously simple to use, yet quite
effective. Made of durable materials and coated for added protection. Celestron
Planispheres come in three different models, to match the latitude from which
you’re observing: |
Sky Maps (493722) - Sky Maps are the ideal teaching guide for learning the night
sky. You wouldn'tsetoffon aroadtrip without a road map, and you don't need
to try to navigate the night sky without a map either. Even if you already know
your way around the major constellations, these maps can help you locate all
kinds of fascinating objects.
T-Adapter (#93625) - A T-Adapter allows you to attach your 35mm SLR
camera to the prime focus of your telescope. This arrangement is used for
terrestrial photography and short exposure lunar and planetary photography.
It can also be used for long exposure deep-sky photgraphy when using a
separate guidescope and tracking motor.
Vibration Suppression Pads (#93503) - These pads rest between the ground
and tripod feet of your telescope. They reduce the amplitude and vibration time
of your telescope when shaken by the wind or an accidental bump. This
accessory is a must for long exposure prime focus photography.
A full description of all Celestron accessories can be found in the Celestron
Accessory Catalog (#93685).
16
CELESTRON ONE YEAR WARRANTY
A. Celestron International (CI) warrants this telescope to be free from defects in materials and workmanship for one
year, CI will repair or replace such product or part hereof which, upon inspection by CI, is found to be defective
in materials or workmanship. As a condition to the obligation of CI to repair or replace such product, the product
must be returned to CI together with proof-of-purchase satisfactory to CI.
B. The Proper Return Authorization Number must be obtained from CI in advance of return. Call Celestron at
(310) 328-9560 to receive the number to be displayed on the outside of your shipping container.
All returns must be accompanied by a written statement setting forth 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 CL
The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of CI, and
shall be required to prepay such costs.
CI shall use reasonable efforts to repair or replace any telescope covered by this warranty within thirty days of receipt. In
the event repair or replacement shall require more than thirty days, Cl shall notify the customer accordingly. CI 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.
CI DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR
A PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HEREIN.
THE SOLE OBLIGATION OF CI UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE
COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. CI 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 CI PRODUCT.
ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE DISCLAIMED SHALL BE LIMITED IN
DURATION TO A TERM OF ONE YEAR 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 limitation 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,
CI reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.
If warranty problem arise, or if you need assistance in using your telescope contact:
Celestron International
Customer Service Department
2835 Columbia Street
Torrance, CA 90503
Tel. (310) 328-9560
Fax. (310) 212-5835
Monday-Friday SAM-4PM PST
This warranty supersedes all other product warranties.
NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an Authorized CI
Dealer in the U.S.A. or Canada. Warranty outside the U.S.A. and Canada is valid only to customers who purchased
from a CI Distributor or Authorized CI Dealer in the specific country and please contact them for any warranty
service.
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