3 Collimating knobs for all Celestron 6" SCT

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These knobs make it easy to collimate your Celestron C6 for optimum image quality. You don’t need any tools, so you never have to worry about losing a tiny Allen wrench or screwdriver in the grass in the dark. You adjust the collimation while looking through the eyepiece, so there’s instant feedback about how your optics are performing. Installation of the knobs is a snap with the included instructions, and you can undo the modification at any time.

This knob set works with all 6” Celestron Schmidt-Cassegrain telescopes.

The collimating screws in this knob set are made of steel, black oxide coated. Their knobs are also black oxide-coated steel, 12 mm (1/2”) in diameter.

The inside of the factory dust cover is close to the scope’s secondary housing when the dust cover is in place, so additional clearance is needed to make room for these collimating knobs. The set comes with a set of spacers that attach to the ring around the corrector plate to move the dust cover slightly away from the secondary assembly.

The three collimation screws hold the secondary mirror and its mounting plate to the secondary housing. The mirror mounting plate pivots on a tang or spring at its center, and the collimation screws, which are threaded into the plate, adjust the mirror tilt (or collimation). Do not remove more than one of the original collimation screws at a time when installing Bob's Knobs, as the secondary mirror might fall off (if all three screws are removed at the same time), or the secondary can pivot inside the tube, scratching the corrector plate (if two screws are removed simultaneously). By removing only one factory collimation screw at a time, replacing it with a knob, and repeating this process for the other two collimation screws, there's no danger of dropping the secondary mirror. The instructions also recommend pointing the optical tube assembly slightly downward during the installation of the knobs for an added safety measure.

Weight:
The weight of this product.
1.6 oz
Warranty:
1 year
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Bob's Knobs - 3 Collimating knobs for all Celestron 6" SCT

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Bob's Knobs - 3 Collimating knobs for all Celestron 6" SCT
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Our Product #: BKC6
Price: $20.95  Ground shipping for this item is $8.95 - Click for more info
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These no-tool collimation knobs fit all versions of the Celestron C6 Schmidt-Cassegrain . . .





. . . our 34th year