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Brand Name Rating # of Ratings
Hubble Optics Hubble Optics 5-Star Artificial Star for Testing and Collimating Telescopes 4.6 58
Bob's Knobs Bob's Knobs for Orion Secondary Set Screws on XT, SkyView & Others # CNsec30 5.0 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
Astronomik Astronomik CLS Filter 4.0 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
Astronomik Astronomik UHC Filter 5.0 2
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
Leupold Leupold Wind River 10x50 5.0 1
TAL TAL Super Plossl 25mm 3.0 1
University Optics University Optics Abbe Orthoscopic 12.5mm 4.0 1
University Optics University Optics Abbe Orthoscopic 18mm 5.0 1
University Optics University Optics Abbe Orthoscopic 4mm 4.0 1
University Optics University Optics Abbe Orthoscopic 7mm 5.0 1
University Optics University Optics Abbe Orthoscopic 9mm 5.0 1
University Optics University Optics Konig II 24mm 4.0 1
University Optics University Optics Konig II 32mm 5.0 1
University Optics University Optics Konig MK-70 25mm 4.0 1
University Optics University Optics Konig MK-70 40mm 4.0 1
University Optics University Optics Konig MK-80 32mm 4.0 1
Astronomik Astronomik Oxygen III (OIII) Filter 5.0 1
DGM Optics DGM Optics NPB Narrow Pass Band Nebula Filter 3.0 1
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