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Brand Name Rating # of Ratings
Optolong Optolong UV / IR Cut Filter - Clip Filter for Canon EOS Cameras with APS-C Sensor 5.0 6
Optolong Optolong Venus & Ultraviolet Venus-U Filter - 1.25" 5.0 1
Optolong Optolong Venus & Ultraviolet Venus-U Filter - 2" 5.0 1
Willmann-Bell Portable Newtonian Telescopes [By Highe] No Reviews 0
Willmann-Bell Practical Computer-Aided Lens Design [By Smith] No Reviews 0
Siebert Optics Siebert Optics Siebert Optics 2" 36mm Observatory Series 5.0 1
Willmann-Bell Solar Astronomy Handbook [By Beck et. al.] No Reviews 0
Willmann-Bell Star Clusters [By Archinal and Hynes] No Reviews 0
Willmann-Bell Star Testing Astronomical Telescopes, 2nd Ed. [By Suiter] No Reviews 0
Swarovski Swarovski EL 8x32 5.0 1
Willmann-Bell SYNOPSYS: Supplement to Joseph M. Geary's Introduction to Lens Design [by Dilworth] No Reviews 0
Willmann-Bell SYNOPSYS: Supplement to Joseph M. Geary's Introduction to Lens Design [by Dilworth] No Reviews 0
Tasco Tasco 9VR 5.0 1
Tasco Tasco StarGuide 4 4.0 1
Willmann-Bell Telescope Optics [By Rutten and Venrooij] No Reviews 0
Willmann-Bell Telescopes, Eyepieces & Astrographs [By Smith et. al.] No Reviews 0
Willmann-Bell The Arp Atlas of Peculiar Galaxies [By Kanipe and Webb] No Reviews 0
Willmann-Bell The Best of Amateur Telescope Making Journal - Vol 1 [By Cook] No Reviews 0
Willmann-Bell The Best of Amateur Telescope Making Journal - Vol 2 [By Cook] No Reviews 0
Willmann-Bell The Dobsonian Telescope [By Kriege and Berry] No Reviews 0
Willmann-Bell The Night Sky Observer's Guide - Vol 1, Autumn & Winter [By Kepple and Sanner] 5.0 2
Willmann-Bell The Night Sky Observer's Guide - Vol 2, Spring & Summer [By Kepple and Sanner] 5.0 1
Willmann-Bell The Night Sky Observer's Guide - Vol 3, The Southern Skies [By Kepple et. al.] No Reviews 0
Willmann-Bell The Orrery [By Foster] No Reviews 0
Willmann-Bell The Year-Round Messier Marathon Field Guide [By Pennington] No Reviews 0
Unihedron Unihedron Diffraction Grating (750 Lines/mm) 5.0 1
Unihedron Unihedron Sky Quality Meter # SQM 4.7 3
Unihedron Unihedron Sky Quality Meter with Lens - Narrow Field of View / Ethernet Connection # SQM-LE No Reviews 0
Unihedron Unihedron Sky Quality Meter with Lens - Narrow Field of View / Ethernet Connection Kit with Housing and PoE Adapter # SQM-LE-KIT No Reviews 0
Unihedron Unihedron Sky Quality Meter with Lens - Narrow Field of View / RS232 Connection # SQM-LR No Reviews 0
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