Home > Telescope Accessories > Bobs Knobs Collimation Thumbscrews
Model: SWPRIBrand: Bobs KnobsSelect Telescope: Celestron C6N, C8N, C10N
Generally In Stock, Please Confirm Before Ordering
COLLIMATE YOUR SCHMIDT-CASSEGRAIN STYLE OR NEWTONIAN STYLE TELESCOPE WITHOUT TOOLS
Itís easy . . . just grab a Bob's Knob collimation thumbscrew and turn. You can even do it while looking through the eyepiece on most scopes. And you'll never drop that pesky little Allen wrench or screwdriver into the grass again. Installation is a snap with the included instructions, and you can undo the modification at any time.
Fits: Celestron C6-N/NGT, C8-N/NGT, and C10-N/NGT Newtonian telescopes.
Primary collimationKnobs: Black plastic, 16 mm (5/8Ē) diameterThreads: Stainless steelPrimary LockKnobs: Red plastic, 16 mm (5/8Ē) diameterThreads: Stainless steelNotes:The telescope optical tube assembly will clear the Dobsonian rocker box with primary knobs installed.Knobs with shorter screws and spacers replace the factory flathead Phillips collimation screws. Knobs with longer screws replace the factory set-style (grub) locking screws.Since the factory collimation and locking screws are close together, knobs must be staggered in height. The locking knobs protrude further than the collimation knobs, and they are now red in color.Some telescopes have a cover over the primary collimation screws. This cover must be removed and set aside when Bobís Knobs are installed.Protect the locking knobs from damage, and do not support the OTA using the locking knobs as feet.
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