Expert Advice
Call 800-422-7876
Bob's Knobs
-
Original price $20.95 - Original price $20.95Original price$20.95$20.95 - $20.95Current price $20.95Bob’s Knobs 3 Collimating Knobs for Metric Celestron 9.25" CPC 925 SCTs
Bob's KnobsIn StockThese knobs make it easy to collimate your Celestron C9¼ CPC 925 for optimum image quality. You don't need any tools, so you never have to worry ab...
View full detailsOriginal price $20.95 - Original price $20.95Original price$20.95$20.95 - $20.95Current price $20.95 -
Original price $25.95 - Original price $25.95Original price$25.95$25.95 - $25.95Current price $25.95Bob's Knobs 3 Collimating Knobs For Astro-Tech 10" Rc Astrograph Secondary Mirror
Bob's KnobsIn StockThese Bob's Knobs fit the secondary mirror housing of the 10" Astro-Tech Ritchey-Chrétiens only. Precise collimation is essential to get the best c...
View full detailsOriginal price $25.95 - Original price $25.95Original price$25.95$25.95 - $25.95Current price $25.95 -
Original price $19.95 - Original price $19.95Original price$19.95$19.95 - $19.95Current price $19.95Bob’s Knobs 3 Collimating Knobs for Celestron 11" SCT with Flat Secondary Housing
Bob's KnobsIn StockThese knobs make it easy to collimate your Celestron C11 for optimum image quality. You don't need any tools, so you never have to worry about losi...
View full detailsOriginal price $19.95 - Original price $19.95Original price$19.95$19.95 - $19.95Current price $19.95 -
Original price $19.95 - Original price $19.95Original price$19.95$19.95 - $19.95Current price $19.95Bob’s Knobs 3 Collimating Knobs for Celestron 11" SCT with Trifid Secondary (Not Edge HD)
Bob's KnobsMore on the wayThese no-tool collimation knobs fit late model aluminum optical tube and most carbon These knobs make it easy to collimate your non-Edge HD Celestr...
View full detailsOriginal price $19.95 - Original price $19.95Original price$19.95$19.95 - $19.95Current price $19.95 -
Original price $25.95 - Original price $25.95Original price$25.95$25.95 - $25.95Current price $25.95Bob's Knobs 3 Collimating Knobs For Astro-Tech 12" Rc Astrograph Secondary Mirror
Bob's KnobsIn StockThese Bob's Knobs fit the secondary mirror housing of the 12" Astro-Tech Ritchey-Chrétiens only. Precise collimation is essential to get the best c...
View full detailsOriginal price $25.95 - Original price $25.95Original price$25.95$25.95 - $25.95Current price $25.95
