Telescope-Collimation Tools-Bob’s Knobs Celestron 8″ SCT Hyperstar Secondary Collimation Knobs – Black Oxide

what our customer say this product:

1. IvanG Verified Buyer – 6 November 2019

   First of all, you do not have to collimate your SCT often, but if you need to do that – it’s much better to have Bob’s Knobs on! Collimation is SO easier with it!