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Brand Name Rating # of Ratings
GSO GSO Parabolic Primary and Secondary Mirror Set - 12" f/5 5.0 2
GSO GSO Parabolic Primary and Secondary Mirror Set - 8" f/5 5.0 2
GSO GSO Parabolic Primary Mirror - 12" f/5 5.0 2
GSO GSO Parabolic Primary Mirror - 8" f/5 5.0 2
GSO GSO Telescope Tube Mounting Rings (Set of 2) - 358mm (14.09") 4.5 2
GSO GSO SCT-to-2" Adapter 4.7 3
Bob's Knobs Bob's Knobs for Celestron C8 f/10 Secondary with EdgeHD Optics # C8edg 5.0 3
Bob's Knobs Bob's Knobs for Celestron C8 f/10 Secondary with Metric Collimation Screw Threads (not for EdgeHD or Hyperstar) # C8met 5.0 3
Bob's Knobs Bob's Knobs for Meade 10" f/10 with 3-Screw Secondary # M10-3 5.0 3
GSO GSO 1.25" Color / Planetary Filter - #23A Light Red 5.0 3
GSO GSO 1.25" Color / Planetary Filter - #47 Violet 5.0 3
GSO GSO 1.25" Color / Planetary Filter - #56 Green 4.7 3
GSO GSO 1.25" Moon Filter 4.3 3
GSO GSO Crayford Focuser Flange / Base Plate for Refractors - 86.4mm 5.0 3
GSO GSO Crayford Focuser Flange / Base Plate for Refractors - 96.6mm 5.0 3
GSO GSO Elliptical Secondary Mirror - 68mm 5.0 3
GSO GSO Parabolic Primary and Secondary Mirror Set - 16" f/4.5 5.0 3
GSO GSO Parabolic Primary Mirror - 16" f/4.5 5.0 3
GSO GSO Red Dot Finder with Quick Release Bracket 5.0 3
GSO GSO Telescope Tube Mounting Rings (Set of 2) - 303mm (11.93") 4.3 3
GSO GSO Primary Mirror Cell for 8" Mirrors (with Cooling Fan) 5.0 3
Bob's Knobs Bob's Knobs for Celestron C6 f/10 Secondary with Metric Collimation Screw Threads # C6 5.0 4
Bob's Knobs Bob's Knobs for Celestron C8 f/10 Post-1980 Secondary with Standard Collimation Screw Threads # C8std 5.0 4
Bob's Knobs Bob's Knobs for Celestron C9.25 f/10 Secondary with Trifid Fastar Housing # C9.25fst 5.0 4
Bob's Knobs Bob's Knobs for Telrad Finder # Telrad 5.0 4
GSO GSO 2" Camera Projection SuperView Photography Eyepiece - 30mm Superview 4.5 4
GSO GSO 2" Camera Projection SuperView Photography Eyepiece - 42mm Superview 4.8 4
GSO GSO 2" Linear Bearing Crayford Focuser for 6" or 8" GSO Ritchey-Chretien RC Telescopes 4.8 4
GSO GSO Elliptical Secondary Mirror - 31mm 5.0 4
GSO GSO Elliptical Secondary Mirror - 50mm 4.8 4
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