Celestar Manual
Assembling your Celestar
16
INSTALLING THE VISUAL ACCESSORIES
Installing the ocular and other visual accessories is the same for both the Celestar 8 and Celestar Deluxe 8.
The Visual Back
The visual back allows you to attach most visual accessories to the telescope. If you use a 1-1/4" star
diagonal or if you want to insert the eyepiece into the telescope without a diagonal, then attach the visual
back to the rear cell on the back of the telescope (see Figure 2-8). To attach the visual back:
1.
Remove the protective cap from the back of your telescope. It is pressed onto the rear cell.
2.
Place the slip ring on the visual back over the threads on the rear cell.
3.
Tighten by rotating the slip ring clockwise until tight.
Once this is done, you are ready to attach other accessories such as eyepieces, and diagonal prisms. If you
want to remove the visual back, rotate the slip ring counterclockwise until it is free of the rear cell.
The Star Diagonal
The star diagonal is a prism
that 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.
Figure 2-8
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 diagonal rotates freely. Rotate the diagonal to the desired position and tighten the thumbscrew.
