BobsKnobs - KNOBS FOR MEADE 8 inch (20 cm) f/6 LIGHTBRIDGE

Primary & Secondary

COLLIMATE YOUR SCHMIDT-CASSEGRAIN STYLE OR NEWTONIAN STYLE TELESCOPE WITHOUT TOOLS

It′s easy . . . just grab a Bob′s Knob 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: All Meade 8 inch (20 cm) f/6 Lightbridge telescopes. Also fits Zhumell and GSO 8 inch
telescopes.

Knobs:
  Primary collimation: Black plastic, 30 mm (1-1/4 inch) diameter, 5-point fluted
  Primary locking: Black plastic, 25 mm (1 inch) diameter, knurled
  Secondary collimation: Black plastic, 13 mm (1/2 inch) diameter, knurled

Threads: Black oxide or zinc plated steel (primary adjustment); stainless steel (primary
locking); black oxide or chrome plate (secondary)

Note1: The factory dust cover will fit normally with secondary knobs installed.

Note2: The telescope optical tube assembly will clear the rocker box with primary knobs
installed.

Note3: Primary mirror springs as supplied by the factory can sag from the weight of the mirror
cell. Our stainless steel replacement springs are stronger and provide adequate support to maintain
primary mirror collimation. We recommend that the mirror locking screws remain in place for additional
control.