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

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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!