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INSTRUCTION MANUAL

IN 265 Rev. A 8/05

Providing Exceptional Consumer Optical Products Since 1975

Customer Support (800)-676-1343
E-mail: support@telescope.com

Corporate Offices (831)-763-7000
P.O. Box 1815, Santa Cruz, CA 95061

Orion

®

Schmidt-Cassegrain

Telescopes 8", 9.25", & 11"

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Summary of Contents for Telescope

Page 1: ... 8 05 Providing Exceptional Consumer Optical Products Since 1975 Customer Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 P O Box 1815 Santa Cruz CA 95061 Orion Schmidt Cassegrain Telescopes 8 9 25 11 ...

Page 2: ...iameter of the visual back 2 Slide the chrome portion of the star diagonal into the visu al back Tighten the set screw on the visual back to hold the star diag onal in place 2 Congratulations on your purchase of an Orion Schmidt Cassegrain telescope The Schmidt Cassegrain opti cal system uses a combination of mirrors and lenses and is referred to as a compound or catadioptric telescope This unique...

Page 3: ...oles until secure Figure 3a Now you re ready to attach the finder scope 2 Unthread the two black nylon thumbscrews until the ends are flush with the inside of the bracket Figure 3b Remove the O ring from the foot of the bracket and slide it over the back of the finder it will NOT fit over the objective end of the finder It may need to be stretched a little Slide it until it seats into the slot in ...

Page 4: ...us on a closer object and counterclockwise for a more distant object A single turn of the focusing knob moves the primary mirror only slightly Therefore it will take many turns about 30 to go from close focus to infinity For astronomical viewing out of focus star images are very diffuse making them difficult to see If you turn the focus knob too quickly you can go right through focus without seein...

Page 5: ...bulb Then use an optical cleaning solution and white tissue paper to remove any remaining debris Apply the solution to the tissue not to the glass and then apply the tissue paper to the lens Low pres sure strokes should go from the center of the corrector to the outer portion Do NOT rub in circles You can use a commercially made lens cleaner or mix your own A good cleaning solution is isopropyl al...

Page 6: ...use an Allen wrench to turn the collimation screw you located in steps 2 and 3 Usually a tenth of a turn is enough to notice a change in collimation If the star image moves out of the field of view in the direction that the central shadow is skewed then you are turning the collimation screw the wrong way Turn the screw in the opposite direction so that the star image is moving toward the center of...

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Page 8: ...erves the right to replace any product which has been discontinued from its product line with a new product of comparable value and function This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function or subjected to abuse misuse mishandling or unauthorized repair Further product malfunction or deterioration due to normal wear is not...

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