Collimate your Catadioptric or Newtonian reflector style telescopes without tools!
It's easy...just grab a Bob's Knob collimation thumbscrew and turn. You can even do it while looking through the eyepiece on most scopes. These thumbscrews are also much easier to use with gloves on. And perhaps most importantly, 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: Meade 10" (25 cm) f/10 SCT versions with six screws on the secondary housing (LX90, LX200, LX200ACF, LX200R, others). The inner screws are for collimation.
Knobs: Black plastic, 16 mm (5/8") diameter
Threads: Black anodized aluminum alloy
1. The factory dust cover will fit normally with Bob's Knobs installed.
2. See our FAQ and technical paper for additional information on installing Bob's Knobs on Meade telescopes with six factory secondary screws.
3. Pre-2005 Meade 10" telescopes have three screws on the secondary housing. The 3-screw secondary requires different knobs (Item M10-3). Do not use knobs for the 6-screw secondary on the 3-screw secondary. The screws on the 6-screw knobs are too long.
4. An Allen wrench for removing the factory collimation screws is included with your order.