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Brand Name Rating # of Ratings
BST BST 2" Variable Transmission Polarizing Filter 4.9 12
Bob's Knobs Bob's Knobs for Orion Secondary Set Screws on XT, SkyView & Others # CNsec30 5.0 7
BST BST 1.25" Variable Transmission Polarizing Filter 4.6 7
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
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 2.5mm 4.5 4
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 25mm 4.8 4
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 6mm 5.0 4
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 9mm 4.8 4
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
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 4mm 5.0 3
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 5mm 4.7 3
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 7mm 4.7 3
BST BST 1.25" Flat Field Eyepiece - 16mm 4.7 3
BST BST 1.25" Flat Field Eyepiece - 27mm 4.3 3
Bob's Knobs Bob's Knobs for C11 f/10 with “Trifid” Fastar Secondary Housing and Metric Collimation Screw Threads # C11metfst 5.0 2
Bob's Knobs Bob's Knobs for Celestron C5 f/10 Secondary with Standard Collimation Screw Threads # C5std 5.0 2
Bob's Knobs Bob's Knobs for Celestron C9.25 f/10 Secondary with Standard Collimation Screw Threads # C9.25std 5.0 2
Bob's Knobs Bob's Knobs for Vixen R200SS Primary # R200pri 5.0 2
Bob's Knobs Bob's Knobs Springs for Meade Lightbridge (8", 10" & 12") f/5 Primary # CNspr 5.0 2
BST BST 1.25" 58-deg UWA Planetary Eyepiece - 15mm 5.0 2
BST BST 1.25" Flat Field Eyepiece - 12mm 4.5 2
BST BST 1.25" Flat Field Eyepiece - 19mm 5.0 2
BST BST 1.25" Telescope Polarizing Filter Set with 1.25" Eyepiece Holder 5.0 2
Sky Engineering Sky Engineering Sky Commander 5.0 1
Bob's Knobs Bob's Knobs for Astro-Tech AT12RC Ritchey-Chretien Secondary # AT12RC 5.0 1
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