Celestron C90 Instruction Manual - Page 3

Browse online or download pdf Instruction Manual for Telescope Celestron C90. Celestron C90 17 pages. Multipurpose instrument
Also for Celestron C90: User Manual (9 pages), Operating Manual (16 pages)

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Celestron C90 Instruction Manual
Never adjust the three screws located in the rear cell of your C90 as these are solely for
manufacturing adjustments. Any adjustments of these screws will automatically void your
warranty. Please contact Celestron if you feel your C90 is out of collimation.

GETTING STARTED

The high magnification of your spotting scope makes it very difficult to hand-hold and, as a
result, it must be attached to a stable platform. The C90 has a tripod adapter block which is
located on the bottom of the spotting scope tube. Remove your spotting scope from the box and
attach it to any of the mounts described below.
Photographic Tripod
For best results, attach your Celestron spotting scope to a photographic tripod like the Celestron
Photographic Tripod (#93596) or any fairly rigid photographic tripod. To attach your spotting
scope to the tripod:
1. Remove the instrument platform from the tripod. To do this, rotate the platform lock
clockwise. Pull the back of the instrument platform out first, then pivot the front out. Since
the platform lock is spring-loaded, hold the clamp in position and pull the platform up, off of
the tripod head. Incidentally, the back of the platform is rounded while the front is flat.
2. Place the tripod adapter block (on the instrument) over the 1/4x20 screw on the tripod head.
Keep in mind that the platform is not on the tripod at this time. Tighten the screw (located on
the under side of the platform) until tight. Just in front of the 1 /4x20 screw is a small peg
used to secure video cameras to the tripod. If you are not using a video camera, this peg,
which is spring-loaded, will push down into the tripod head.
3. Rotate the platform lock clockwise. Slide the front of the platform in first, then pivot the back
in.
4. Push the platform lock counterclockwise until it touches the under side of the tripod head.
This will hold the platform in place.
Once mounted on the tripod, you are ready to attach the standard accessories.
Slow Motion Control
The Photographic Tripod Slow Motion Control (#93804-A) is not a mount, but a fine pointing tool that fits
between your spotting scope and a photographic tripod head. Unlike the rough adjustment handles found on
photographic tripods, the Photographic Tripod Slow Motion Control uses fine adjustment knobs to allow
for precision pointing. A deluxe version (93804-DX) is also available.
WARNING