Aligning The Finderscope - Celestron 91012 Manual De Instrucciones

INSTALLING THE STAR DIAGONAL
The star diagonal is a prism that diverts the light at a right angle to a more
convenient viewing angle. To install the star diagonal:
1. Turn the set screw on the visual back until its tip no longer extends
into 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.
INSTALLING THE EYEPIECE
The eyepiece is an optical element that magnifies the image focused by
the telescope. Without the eyepiece, it would be impossible to use the
telescope visually. To attach an eyepiece to the telescope:
1. Loosen the set screw on the star diagonal so that it does not obstruct
the inner diameter of the star diagonal.
2. Slide the chrome barrel of the eyepiece into the star diagonal.
3. Tighten the set screw on the star diagonal to secure the eyepiece
in place.
FOCUSING THE TELESCOPE
The focus knob is located just to the right of the visual back. To focus
the telescope, simply turn the knob left or right until the image appears
sharp. The focusing mechanism is very fine and it can take quite a few
turns of the focus knob to go through the entire range of focus. The first
time you focus on a distant target, turn the knob slowly and work from one
stop to the other.

ALIGNING THE FINDERSCOPE

The 8x50 finderscope helps you aim your telescope by looking through it and covering your target with the crosshair reticle. The first time you assemble your
telescope, you will need to align the finderscope 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 or the telescope is dropped.
1. Take the telescope outside during the day. Using your naked eye, find an easily recognizable object, such as a streetlight, car license plate, or tall tree. The object
should be as far away as possible, but at least a quarter mile away.
2. Remove the main dust cover from the telescope and make sure your 28mm eyepiece is installed.
3. Move the telescope left and right or up and down so that it is roughly pointing toward the object you chose in step 1.
Focus Knob
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