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Celestron 76LCM Manual

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5
Leveling the Telescope
Now that the base is attached to the tripod, it is a good idea
to use the included bubble level to more accurately level
the telescope.
1. Place the bubble level on the top of the motorized base.
2. Adjust the tripod legs until the bubble level shows the base
to be level.
Attaching the Telescope to the Base
Your telescope optical tube has a built on dovetail mounting
bar used to attach the tube to the base. To attach the
telescope tube:
1. Loosen the altitude clutch knob a quarter turn and rotate the
tube clamp so that the mounting bolt is positioned on the
top of the base. Retighten the altitude knob by hand, but do
not over tighten.
2. Loosen the tube clamp mounting bolt.
3. Slide the telescope tube’s dovetail mounting bar into the
tube clamp. Make sure that the finderscope is pointing up
when the tube is attached to the base.
4. Tighten the mounting bolt by hand to secure the tube to
the base.
Your telescope is fully assembled and is ready to attach
the accessories.
The Star Diagonal
(For 60, 70, 80 and 90mm Models)
The star 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. To attach the star diagonal:
1. Turn the thumbscrew on the eyepiece adapter at the end
ofthefocuserbarreluntilitnolongerextendsinto(i.e.,
obstructs)theinnerdiameterofthefocusbarrel.Removethe
protective dust cap from the focuser barrel.
2. Slide the chrome portion of the star diagonal into the
focuser barrel.
3. Tighten the thumbscrew on the focuser barrel to hold the
star diagonal in place.
If you wish to change the orientation of the star diagonal,
loosen the thumbscrew on the eyepiece adapter until the star
diagonal rotates freely. Rotate the diagonal to the desired
position and tighten the thumbscrew.
The Eyepiece
The eyepiece is the optical element that magnifies the image
focused by the telescope. The eyepiece fits either directly
intothefocuser(76/114LCMmodels)orintothestardiagonal
(60/70/80/90LCMmodels).Toinstalltheeyepiece:
For 60, 70, 80 and 90 models:
1. Loosen the thumbscrew on the star diagonal so it does
not obstruct the inner diameter of the eyepiece end of the
diagonal. Remove the protective dust cap from the star
diagonal’s barrel.
2. Slide the chrome portion of the low power 25 mm eyepiece
into the star diagonal.
3. Tighten the thumbscrew to hold the eyepiece in place.
For 76 and 114 models:
1. Loosen the thumb screw on the eyepiece adapter at the end
of the focuser barrel and remove the protective dust cap
from the focuser barrel.
2. Slide the chrome portion of the low power 25 mm eyepiece
into the eyepiece adapter.
3. Tighten the thumbscrew to hold the eyepiece in place.
To remove the eyepiece, loosen the thumbscrew on the
eyepiece barrel and slide the eyepiece out.
Figure 2-5
Leveling the Base
Place Bubble
Level Here
Figure 2-8
Eyepiece for 76/114 LCM
Eyepiece
Figure 2-7
Accessories For 60/70/80/90 LcM
Focuser Barrel
Eyepiece
Star Diagonal
Figure 2-6
Mounting
Bolt
Dovetail
Bar
Altitude
Clutch Knob
… 7 …


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