MEADE LIGHTBRIDGE (GSO) 12” NEWTONIAN

We offer knobs for the Meade Lightbridge and GSO 12” primary and secondary, along with stronger springs to support the primary mirror. Select the type of knobs/springs for your telescope from the list below.

A. Knobs for Meade Lightbridge (GSO) 12” f/5 Primary

Part: MLB12pri
Fits: Meade Lightbridge and GSO 12” (30 cm) f/5 telescopes.

Primary collimation
  • Knobs: Black plastic, 30 mm (1-1/4”) diameter, 5-point fluted
  • Threads: Plated steel
Primary Lock
  • Knobs: Black plastic, 25 mm (1”) diameter, knurled
  • Threads: Stainless steel
Notes:
  1. If your primary looks different from our photograph, or already has factory collimation knobs, these knobs will not fit.
  2. The telescope optical tube assembly will clear the rocker box with primary knobs installed.
  3. One of the primary mirror knobs may interfere with the cooling fan connector. The plug will fit properly between the knob flutes, so leave this one knob stationary and collimate using the remaining knobs. If desired, you can leave the factory collimation screw that is next to the fan connector in place.
$29.95

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B. Springs for Meade Lightbridge (GSO) 12” f/5 Primary

Part: CNspr
Fits: Meade Meade Lightbridge and GSO 12” (30 cm) f/5 telescopes.

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.

$16.95

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C. Knobs for Meade Lightbridge (GSO) 12” f/5 Secondary

Part: CNsec35
Fits: Meade Lightbridge and GSO 12” (30 cm) f/5 telescopes.

Knobs: Black plastic, 13 mm (1/2”) diameter
Threads: Stainless steel

$20.95

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D. Low-Profile Azimuth Lock Knob for Meade Lightbridge (GSO) 12” f/5 Telescope

Fits: All Meade Lightbridge and GSO 12” f/5 telescope rocker boxes

Knob: Black plastic fluted, 38 mm (1-1/2”) diameter
Threads: Stainless steel

Notes:
  1. Some early Meade Lightbridge and GSO 12” telescopes will strike the azimuth lock knob on the rocker box as the telescope is moved toward the zenith. Our low-profile lock knob fixes this problem.
  2. Two different azimuth lock bolt diameters are used: 5/16” (8 mm) and 3/8” (9.5 mm). Select the correct diameter bolt from the options below.
$10.95

Bolt Diameter