Celestron Computer Monitor 80SLT User Manual

NexStar 80SLT  
Item #22086  
Quick Set-up Guide  
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Your NexStar 80SLT includes: optical tube;  
fork arm; pre-assembled tripod;  
computerized hand control; hand control  
holder; star diagonal; two eyepieces;  
finderscope; accessory tray; documentation  
including an owner’s manual, The Sky® CD  
and NSOL Telescope Control Software.  
Assemble tripod by spreading the legs  
out until the center leg brace is fully  
extended.  
Extend tripod legs 6 to 8 inches by  
loosening the tripod leg locking knob  
and pulling the leg to desired length and  
re-tightening knob.  
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All three legs should be the same length to  
provide a level platform for the telescope. A  
bubble level is included (inset) to assist in leveling. tray to the post on the brace.  
Place accessory tray on top of center leg  
brace by lining up the grooves on the  
Once grooves are aligned, turn accessory  
tray until it snaps into the clips on each  
leg brace.  
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Coupling screw  
Thread the coupling screw into  
the hole at the bottom of the fork arm  
base. Tighten screw to secure the  
fork arm.  
Slide the optical tube dovetail into the fork  
arm as shown above.  
Hold the telescope fork arm and place  
the bottom of the base inside the tripod  
mounting platform as shown.  
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Hand Control Guide  
Before you can begin using your NexStar 80SLT, you must setup your computerized hand control and go through  
the SkyAlign alignment procedure. In order for the NexStar to accurately point to the objects in the sky, it must first  
be aligned with known positions (stars) in the sky. With this information, the telescope can create a model of the  
sky, which it uses to locate any object in its database  
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Turn power switch (located on the side of  
the fork arm) toonposition. The light will  
come on and the hand control will  
display “NexStar SLT.  
You will notice that there are directional  
arrows in the center of the hand control.  
These only move the telescope. They  
cannot be used to scroll through  
menu features.  
Now you will need to align the finderscope.  
Turn on the red LED light by turning the  
knob shown above. When used for the first  
time, remove the clear plastic disk that is  
located between the battery clip and the  
battery. See inset.  
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Use the hand control direction arrow  
buttons to point telescope at a distant  
land object, like a telephone pole or at  
night you can use the moon. Center and  
focus the object in the 25mm eyepiece  
of the telescope.  
In order to accurately center an object  
in the eyepiece it may be necessary to  
change the slew speed of the motors.  
To change the slew speed, press the  
RATE button then select a number from  
1 (slowest) to 9 (fastest).  
With the object centered in the eyepiece,  
use the azimuth (right/left) and altitude  
(up/down) adjustment knobs on the  
finderscope to place the red alignment  
dot directly over the centered object.  
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Use the UP and DOWN scroll buttons  
(located on #6 and #9) to select  
“SkyAlign” then press ENTER. Now you  
will need to enter your site/time  
information.  
Once you have aligned your finderscope, When the display reads NexStar SLT,  
make sure to turn off the LED light to  
conserve the battery. Now you are ready  
to align the telescope. This will have to  
be done at night.  
press ENTER to begin the alignment  
procedure.  
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The hand control will display the last  
entered time and site information. Since  
this is your first time using the NexStar,  
press UNDO to enter your site and time  
information.  
Press ENTER to select City Database. Use  
the Up and Down scroll buttons (located  
on #6 and #9) and choose the closest city continue. Press UNDO to backspace.  
to your present location. Press ENTER  
Using the numeric key pad enter your  
time information. Press ENTER to  
after selecting the country, state and city.  
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Hand Control Guide [cont]  
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Use the directional arrow keys on the hand  
control to slew (move) the telescope  
towards any bright celestial object in the  
sky. Center the object in the finderscope  
and press ENTER.  
Now, using the Up and Down scroll  
buttons (located on #6 and #9), verify the date. Press ENTER to continue. Press  
time zone you are in and press ENTER.  
Using the numeric key pad enter the  
UNDO to backspace.  
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If the finderscope has been properly  
aligned, the alignment star should now  
be visible in the field of view of the  
eyepiece.  
For the second alignment object, choose  
a bright star or planet as far from the first  
alignment object as possible. Once again  
use the directional arrow buttons to  
center the object in the finderscope and  
press ENTER. Once object is centered in  
the eyepiece, press ALIGN.  
The hand control will prompt you to  
center the bright alignment star in the  
center of the eyepiece. Once centered,  
press ALIGN. This will accept the star as  
your first alignment position.  
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INFO  
TOUR  
Now that your telescope is properly  
aligned, you are ready to find your first  
object. Press the TOUR button on the  
hand control. The hand control will  
display a list of objects that are visible for object.  
the date and location entered.  
Press INFO to read information about the  
object displayed. Press the DOWN scroll  
key to display the next object. Press  
ENTER to slew (move) to the displayed  
Repeat the process for the third  
alignment star. When the telescope has  
been aligned to the final star, the display  
will read “Match Confirmed. Press UNDO  
to display the names of the three bright  
objects you aligned to, or press ENTER to  
accept these three objects for alignment.  
For general usage information, please consult your user’s manual.  
If you have questions or problems with set-up, please contact  
Celestron Technical Support: 310.803.5955  
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