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Bob's Knobs Celestron 8" EdgeHD Collimation Knobs - Black Oxide - C8EDGBO

SKU: BOB-C8EDGBO

Bob's Knobs Celestron 8" SCT EdgeHD Collimation Knobs - Black Oxide

Bob's Knobs Celestron 8" SCT f/10 Collimation Knobs fit Celestron 8" (20 cm) f/10 SCT with EdgeHD optics and Fastar secondary.

  • Bob's Knobs are made from black, oxide steel and are 12 mm in diameter (1/4")
  • The threads are black, oxide steel
  • Before installing your knobs be sure to check the thread length on them so that they match the thread length on the factory collimation screws. These knobs will only fit Celestron 8" SCT with EdgeHD optics and Fastar Secondary. The knobs on non-EdgeHD Fastar secondary are too long
  • With Bob's Knobs installed your factory dust cover will fit normally