Installing The Diagonal & Eyepieces; Installing The Starpointer Finderscope; Using The Starpointer Finderscope - Celestron Astromaster 90 AZ Mode D'emploi

INSTALLING THE
The diagonal is a prism that diverts the light at a right angle to the light
path of the refractor . This allows you to observe in a position that is more
comfortable than if you looked straight through . This diagonal is an erect
image model that corrects the image to be right side up and oriented
correctly left-to-right which is much easier to use for terrestrial observing .
Also, the diagonal can be rotated to any position which is most favorable
for you . To install the diagonal and eyepieces:
1 . Insert the small barrel of the diagonal into the 1 .25" eyepiece adapter
of the focus tube on the refractor (Figure 2-13) . Make sure the two
thumbscrews on the eyepiece adapter do not protrude into the focuser
tube before installation and the plug up cap is removed from the
eyepiece adapter .
2 . Put the chrome barrel end of one of the eyepieces into the diagonal and
tighten the thumb screw (Figure 2-14) . Again, when doing this make
sure the thumb screw is not protruding into the diagonal before inserting
the eyepiece .
3 . The eyepieces can be changed to other focal lengths by reversing the
procedure in step 2 above .

INSTALLING THE STARPOINTER FINDERSCOPE

1 . Loosen the two mounting screws near the bottom of the finderscope .
2 . Slide the base of the finderscope over the finderscope mounting bracket
found on the telescope optical tube .
3 . Tighten the screws to secure the finderscope in place .
Your StarPointer finderscope is shipped with a clear plastic tab inserted
between the battery and the contact to prevent the battery from accidentally
being discharged in shipment . Pull this tab out before using your finderscope .

USING THE STARPOINTER FINDERSCOPE

The StarPointer finderscope helps you aim your telescope by looking through its round glass window and covering your
target with the red dot projection . The first time you assemble your telescope, you will need to align the StarPointer with the
main optics of the telescope . Although this step can be done at night, it is significantly easier during the day . Once you have
completed the finderscope alignment, you should not have to repeat this step unless the finderscope is bumped, dropped,
or removed during transit .
DIAGONAL & EYEPIECES
Figure 2-13
Figure 2-14
Power/Brightness
Knob
Up/Down
Adjustment Knob
Mounting Screws
Left/Right
Adjustment Knob
Figure 2-15
ENGLISH I 9