Bob's Knobs FPI FPI Protostar secondary

Bob's Knobs for FPI Protostar Secondary:

Precise and Convenient Collimation

• Specially Designed for FPI Protostar: Tailored for FPI Protostar secondary assemblies that use a 8-32 x 1 inch long set screw for collimation adjustments.
• Part Details - Part: FPIsec8:
  • Telescope Compatibility: Perfectly fits FPI Protostar secondary assemblies with specified collimation screw dimensions.
  • Knob Features: Constructed from black plastic, each knob is 13 mm (1/2”) in diameter, ensuring easy grip and precise adjustments.
  • Thread Quality: Features durable stainless steel threads for a secure and lasting connection.
• Usage Considerations:
  • Specific Fit: These knobs are compatible with FPI Protostar secondary assemblies that use 8-32 x 1 inch long set-style collimation screws.
  • Light Path Note: The outside edge of each knob may slightly extend into the light path.
• Enhanced Telescope Tuning: Ideal for astronomers with FPI Protostar secondary assemblies seeking a simple, tool-free solution for accurate and easy collimation adjustments.