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50mm Refractive Double Separation Lens for Telescopes and Viewfinders (D50F360)
1 x Parabolic Reflector Lens D114F450 High Precision Primary and Secondary Mirror...
Double Convex K9 Optical Glass Lens, Diameter 20-58mm, Focal Length 40-200mm(D50 F300 C5 E3)
Germanium Lens with AR+DLC Coating - Optical/Thermal Image Thermometer Observation Window 1...
360 Degree Rotation Controller for Astronomical Telescopes Compatible Accessories M42, M48 and...
Telescope Accessory, for Wide Angle Eyepiece Telescope, Full Coating Aspheric Surface High...
D70 70mm Double Separation Single Sided Blue Film Telescope Lens with Retaining Ring(D70F500)
90mm Double Separation Lens for Refractive Astronomical Telescopes - Multilayer Coating Available(D90F900 Blue Film)
50x50mm Absorption-Type Neutral Density Optical Filter - Glass Light Attenuation Sheet for...
Molybdenum Reflective Lens for High-Intensity Engraving Machines, 20/25/30mm Diameter, 1PCS, >94% Reflectivity(30x3mm)
High Precision K9 Optical Reflector Lens - Square/Round, Aluminium Coated, Pack of...
1 Accessory for Reflective Astronomical Telescope D150F1200 Improved Planetary Observation (Primary Mirror+Secondary Mirror)
1 x Newtonian Parabolic Reflector Primary Mirror D130F650 with 35mm Secondary -...
D60 mm Multilayer Green Film Lens for DIY Refractor Astronomical Telescopes (D60F700)
Germanium lens with DLC coating for optical and thermal imaging - 1...
Germanium lens with DLC coating for optical and thermal imaging - 1 Unit(30x3mm AR+DLC)
Short axis secondary mirror for DIY reflection astronomical telescopes (20 to 70...
Zinc Selenide (ZnSe) Focusing Lens - 1PCS Optical Welding Machine Accessory, 99.8%...
Germanium lens with AR+DLC coating Optical/Thermal Imager Thermometer Observation Window 1 piece...
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