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he st fractors and Schmidt-
asseg n
are ph
o attach t Schmidt-
assegrain:
1. rn t
into (i. o
2. Slide t
3. ighten the set screw on the visual back to hold the star diagonal in
you wish to change the orientation of the star diagonal, loosen the
diagonal rotates freely. Rotate the
he set screw.
a
T
C
ar diagonal is a prism that diverts the light at a right angle to the light path of re
rai telescopes. This allows you to observe in positions that
ysically more comfortable than if you looked straight through.
he star diagonal onto the optical tube of a
T
C
Tu he set screw on the visual back until its tip no longer extends
e., bstructs) the inner diameter of the visual back.
he chrome portion of the star diagonal into the visual back.
T
place.
If
set screw on the visual back until the star
diagonal to the desired position and tighten t
Refractors – To use the star diagonal on refractor telescopes, it is inserted into the 1 ¼” eyepiece adapter.
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The eyep
Without
f refractors and or into the visual
ack on the Schmidt-Cassegrain To attach an ocular:
1. oosen the set screw on the eyepiece adapter so that
rrel.
2.
3.
e eyepiece, loosen the set screw on the
cuser and slide the eyepiece out. You can replace
Many times it will be more comfortable to use a star diagonal on
To install
an eyepiece into the star diagonal:
A. Loosen the set screw on the star diagonal until the tip no longer extends
into the inner diameter of the eyepiece end of the diagonal.
diagonal.
n place.
t screw on the star diagonal and
Slide the eyepiece out. You can replace it with other optional eyepieces.
iece, or ocular as it is also called, is an optical element that magnifies the image focused by the telescope.
the eyepiece it would be impossible to use the telescope visually. The eyepiece fits directly into the focuser
the Newtonian
o
b
L
it does not obstruct the inner diameter of the ba
Slide the chrome portion of the eyepiece into the
focuser.
Tighten the set screw to hold the eyepiece in place.
To remove th
fo
it with another ocular.
the Figure 2-12
refractors and Schmidt-Cassegrain for most areas of the sky.
B. Slide the chrome portion of the eyepiece into the star
C. Tighten the set screw on the star diagonal to hold the eyepiece i
D. To remove the eyepiece, loosen the se
Focuser Tension
Screw
Focuser Knob
2" Focuser
Barrel
1 ¼" Eyepiece
Adapter
T-Adapter
Thread
Eyepiece
Star Diagonal
Visual Bac
k
Figure 2-11
14