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Brand Name Rating # of Ratings
HoTech HoTech 1.25" SCA Laser Collimator - Single Dot 4.8 27
HoTech HoTech 2" & 1.25" SCA Laser Collimator - Single Dot 4.8 27
HoTech HoTech 1.25" SCA Laser Collimator - Crosshair 5.0 20
HoTech HoTech 2" & 1.25" SCA Laser Collimator - Crosshair 5.0 20
William Optics William Optics 2" 99% Dielectric Dura Bright Carbon Fiber Mirror Diagonal for Refractors 4.9 20
William Optics William Optics 2" 99% Dielectric Dura Bright Carbon Fiber Mirror Diagonal for SCTs 4.9 20
William Optics William Optics 1.25" Binoviewer Package (with 1.25" Wide Angle Eyepieces and 1.6x Barlow) 4.6 19
William Optics William Optics 2" to 1.25" RotoLock Eyepiece Adapter # F-ROTO-A2-125 4.7 18
William Optics William Optics 1.25" Carbon Fiber Dielectric Star Mirror Diagonal 4.6 17
William Optics William Optics SCT Thread Adapter for 2" Diagonal 4.9 16
HoTech HoTech 2" SCA Field Flattener with T-Thread for f/5 - f/8 Refractor Telescope # FF582 4.8 13
William Optics William Optics 2" Carbon Fiber Dielectric Star Mirror Diagonal for Refractors 4.7 13
William Optics William Optics 2" Carbon Fiber Dielectric Star Mirror Diagonal with SCT Adapter 4.7 13
HoTech HoTech Astro Aimer G3 - Green Laser and Flashlight 4.6 12
William Optics William Optics 1.25" 45-deg Erecting Prism Diagonal 4.9 11
William Optics William Optics 2" Swan Series Eyepiece - 40mm 4.6 10
William Optics William Optics Red Dot Finder with Quick Release Bracket # M-RDF-P 4.6 10
HoTech HoTech 1.25" SCA T-Adapter 4.8 8
HoTech HoTech 2" SCA T-Adapter 4.8 8
William Optics William Optics 1.25" 90-deg Erecting Prism Diagonal with Helical Focusing # D-EP90-125 4.5 8
William Optics William Optics 1.25" 99% Dielectric Dura Bright Carbon Fiber Star Mirror Diagonal 5.0 8
William Optics William Optics 2" 90-deg Erecting Prism Diagonal 4.8 8
William Optics William Optics 2" 45-deg Erecting Prism Diagonal # D-EP2 4.5 6
William Optics William Optics 2" DDG Crayford Focuser for Synta Refractors - Dual Speed 5.0 6
William Optics William Optics 2" RotoLock Eyepiece Adapter / Visual Back with 2" SCT Female Thread # D-ROTO-A2-SCT2F 4.7 6
William Optics William Optics 2" Swan Series Eyepiece - 25mm 4.5 6
William Optics William Optics Mounting Rings (Set of 2) - 90mm (3.54") 4.8 6
William Optics William Optics 2" 99% Dura Bright RotoLock Mirror Diagonal for Refractors # D-DIG2D-ROTO-A2 5.0 6
William Optics William Optics 1.25" SPL Series Eyepiece - 3mm 4.6 5
William Optics William Optics 2" 99% Dura Bright RotoLock Mirror Diagonal for SCTs # D-DIG2D-ROTO-SCT 4.8 5
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