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We offer knobs for all versions of the Meade 8” f/10 and f/6.3 Schmidt-Cassegrain secondary, including those with three, four, and six secondary screws. (The extra screws on the four- and six-screw versions are for secondary disassembly, not collimation.) Select knobs for your telescope from the list below.
A. Knobs for Meade 8” f/10 with 3-Screw Secondary
Fits: Meade 8” (20 cm) f/10 SCT versions with three screws on the secondary housing (2080, LX5, LX10, LX50, LX90, LX100, LX200, others)
Knobs: Black plastic, 13 mm (1/2”) diameter
Threads: Black anodized aluminum alloy
- The factory dust cover may contact the knobs when installed. We provide a set of spacers that attach to the inside of the dust cover to move it slightly away from the secondary assembly. You can also press the center of the cover from the inside to contour it for additional clearance.
- Some post-2004 Meade 8” telescopes have four screws or six screws on the secondary housing. The 4-screw and 6-screw secondary require different knobs (Items B and C below) Do not use knobs for the 3-screw secondary on the 4-screw or 6-screw secondary. The screws on 3-screw knobs are too short.
- Some very early Meade 8” model 2080 telescopes have two collimation screws. Please contact us using the link at the bottom of this page for knobs to fit this scope.
- An Allen wrench for removing the factory collimation screws is included with your order.