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The NexStar GPS has a dual axis clutch system. This allows you to move the telescope manually even when the telescope is not
powered on. However, both clutches need to be tightened down for the telescope to be aligned for "goto" use. Any manual
movement of the telescope will invalidate your telescope's alignment.
Note: When transporting your telescope, make sure that both clutches are somewhat loose; this will diminish the load
placed on the worm gear assemblies and protect them from damage.
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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 visual back until its tip no longer extends into (i.e., obstructs) the inner diameter of the visual
back.
2. Slide the chrome portion of the star diagonal into the visual back.
3. Tighten the thumbscrew on the visual back to hold the star diagonal in place.
If you wish to change the orientation of the star diagonal, loosen the thumbscrew on the visual back until the star diagonal rotates
freely. Rotate the diagonal to the desired position and tighten the thumbscrew.
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The eyepiece, or ocular, is the optical element that magnifies the image focused
by the telescope. The eyepiece fits into either the visual back directly or the
star diagonal. To install the eyepiece:
1. Loosen the thumbscrew on the star diagonal so it does not obstruct the
inner diameter of the eyepiece end of the diagonal.
2. Slide the chrome portion of the eyepiece into the star diagonal.
3. Tighten the thumbscrew to hold the eyepiece in place.
Figure 3-5 - The Visual Accessories
Eyepiece
Visual
Bac
k
Star
Dia
g
onal
Figure 3-4 - The NexStar has an altitude clutch lever (left) located on the fork arm and an azimuth
clutch lever (right) located on the bottom portion of the base.
Azimuth Clutch Loc
k