Bob's Knobs for FPI Protostar Secondary (8-32 collimation screw)

Article number: BKFPIsec8
Availability: Order now!
Delivery time: Ships in 2-3 Days from our Warehouse

We offer knobs for the FPI Protostar secondary that has either 8-32 or 10-24 collimation screws. FPI Protostar secondary assemblies are used in several different Newtonian designs. Select knobs for your secondary from the list below.

A. Knobs for FPI Protostar Secondary (8-32 collimation screw)


Part: FPIsec8
Fits: FPI Protostar secondary assemblies using a 8-32 x 1 inch long set screw for collimation adjustment

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

Notes:

  1. These knobs will fit the FPI Protostar secondary assemblies with 8-32 x 1 inch long set-style collimation screws. The outside edge of each knob is slightly in the light path.
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