Assembling Your CM-1100 • 11
The visual back is the accessory that allows you to attach all visual accesso-
ries to the telescope. To attach the visual back:
1.
Remove the plastic cover on the rear cell.
2.
Place the knurled slip ring on the visual back over the threads on the rear
cell.
3.
Hold the visual back with the set screw in a convenient position and rotate
the knurled slip ring clockwise until tight.
Once this is done, you are ready to attach other accessories, such as eye-
pieces, diagonal prisms, etc.
If you want to remove the visual back, rotate the slip ring counterclockwise until
it separates from the rear cell.
The star diagonal is a prism that diverts the light at a right angle to the light
path of the telescope. This allows you to observe in positions that are physi-
cally more comfortable than if you looked straight through. To attach the star
diagonal: NOTE: The CM-1400 uses a 2" mirror diagonal.
1.
Turn the set screw 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 set screw on the visual back to hold the star diagonal in place.
If you wish to change the orientation of the star diagonal, loosen the set screw
on the visual back until the star diagonal rotates freely. Rotate the diagonal to
the desired position and tighten the set screw.
Attaching the Visual
Back
Installing the Star
Diagonal
Figure 2-9
