The manufacturer Bob's Knobs supplies various collimation screws for Schmidt-Cassegrain, Ritchey-Chrétien and Newton telescopes.
The selection includes screws for primary and secondary mirrors for optics between 5" and 16". In addition, Bob's Knobs offers mounting screws for various mounts from Celestron (CGE, CGE Pro, NexStar), Losmandy (GM-8, G-11) and TeleVue (Gibraltar).
Please refer to the respective specifications and technical data to find the right screws for your model!
- Fits: StarSense Explorer 8 and 10 Newtonian telescopes with factory collimation screws.
- Primary collimation: Knobs: Black plastic, 16 mm (5/8”) diameter, Threads: Stainless steel
- Primary Lock: Knobs: Red plastic, 16 mm (5/8”) diameter, Threads: Stainless steel
