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Astro-Tech Collimation Knobs

3 Items

Bob's Knobs Astro Tech Collimation Knobs - Secondary Mirror - AT10RC

SKU: BOB-AT10RC
  • Set of three collimation knobs from Bob's Knobs designed for the Astro-Tech 10" RC telescope's secondary mirror.
  • Measuring 16 mm (5/8") in diameter, these knobs feature black plastic construction.
  • Although the factory supplied dust cover may come into contact with these collimation knobs while they are installed, it will still remain in place.
  • These Bob's Knobs Collimation Knobs contain stainless steel threads.
$25.95 $20.76

Bob's Knobs Astro Tech AT12RC Collimation Knobs - Secondary Mirror - AT12RC

SKU: BOB-AT12RC
  • Set of three collimation knobs from Bob's Knobs designed for the Astro-Tech 12" RC telescope's secondary mirror.
  • Measuring 16 mm (5/8") in diameter, these knobs feature black plastic construction.
  • Although the factory supplied dust cover may come into contact with these collimation knobs while they are installed, it will still remain in place.
  • These Bob's Knobs Collimation Knobs contain stainless steel threads.
$25.95 $20.76

Bob's Knobs Astro Tech AT6RC & AT8RC Collimation Knobs - Secondary Mirror - AT8RC

SKU: BOB-AT8RC
  • Set of three collimation knobs from Bob's Knobs designed for Astro-Tech 6" and 8" RC telescope secondary mirrors.
  • Measuring 16 mm (5/8") in diameter, these knobs feature black plastic construction.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed, although some secondary mirror height differences may cause the knobs to be too high for the dust cover to fully seat.
  • These Bob's Knobs Collimation Knobs contain stainless steel threads.
$25.95