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Brand Name Rating # of Ratings
Zen-Ray Zen-Ray 2015 ZRS HD (Summit) 8x42 Waterproof Binoculars 4.7 10
Bob's Knobs Bob's Knobs for Orion Secondary Set Screws on XT, SkyView & Others # CNsec30 5.0 7
Docter Docter 1.25" & 2" 84-deg Ultra Wide Angle UWA Eyepiece - 12.5mm 5.0 5
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
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
Zen-Ray Zen-Ray 2015 ZRS HD (Summit) 10x42 Waterproof Binoculars 4.7 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
Zen-Ray Zen-Ray Vista 8x42 Waterproof Binoculars 4.0 2
Zen-Ray Zen-Ray ZEN ED2 8x43 Waterproof Binoculars with Dielectric Prism Coating 5.0 2
Bob's Knobs Bob's Knobs for Astro-Tech AT12RC Ritchey-Chretien Secondary # AT12RC 5.0 1
Bob's Knobs Bob's Knobs for Celestron C11 f/10 with Flat Secondary Housing and Metric Collimation Screw Threads # C11met 5.0 1
Bob's Knobs Bob's Knobs for Celestron C14 f/11 Secondary with Factory Headless Set-Style Collimation Screws # C14set 5.0 1
Bob's Knobs Bob's Knobs for GSO 12" Ritchey-Chretien Secondary # AT12RC 5.0 1
Bob's Knobs Bob's Knobs for GSO made 12" Ritchey-Chretien Secondary # AT12RC 5.0 1
Bob's Knobs Bob's Knobs for Locking Losmandy GM-8 & G-11 Elevation Adjustment # LGele 5.0 1
Bob's Knobs Bob's Knobs for Meade 10" (25 cm) f/4 Schmidt-Newt Secondary # MSN10sec 5.0 1
Bob's Knobs Bob's Knobs for Meade 10" f/10 with 6-Screw Secondary # M10-6 5.0 1
Bob's Knobs Bob's Knobs for Meade 8" f/10 with 3-Screw Secondary # M8-3 5.0 1
Bob's Knobs Bob's Knobs for Meade Lightbridge 8" f/6 Primary # MLB8pri 5.0 1
Bob's Knobs Bob's Knobs for Orion 12" Ritchey-Chretien Secondary # AT12RC 5.0 1
Bob's Knobs Bob's Knobs for Orion Astrograph 4-Vane Phillips Screw Secondary Knobs # CNsec35 5.0 1
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