Bob's Knobs for AstroSystems 2.0 & 2.14 and Starmaster Secondaries

Article number: SMsec
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The knobs below will fit the AstroSystems 2.0 and 2.14 secondary, both of which use the same knobs. AstroSystems secondary assemblies are used in several different Newtonian designs such as the Starmaster series, and are characterized by four collimation screws instead of the usual three.

A. Knobs for AstroSystems 2.0 & 2.14 Secondary

Part: SMsec
Fits: AstroSystems 2.0 and 2.14 secondary

Knobs: Black plastic, 16 mm (5/8”) diameter
Threads: Stainless steel

Notes:

  1. Four knobs are included with this kit.
  2. These knobs will fit the AstroSystems 2.0 (used on the Starmaster 12.5) and AstroSystems 2.14 (used on the Starmaster 14.5) secondary assemblies. Both of these secondaries come from the factory with headless set screws for adjusting collimation.
  3. On some AstroSystems secondaries the knobs will slightly overhang the edge and enter the light path.
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