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Gallium Arsenide Optical Lenses Sheet Focusing for Strong Light Applications, 1PCS, Multiple...

D131F1200 Double Separation Multilayer Lens for Astronomical Telescopes (Caliber 131mm)

High Precision K9 Optical Reflector Lens - Square/Round, Aluminium Coated, Pack of...

50x50mm Absorption-Type Neutral Density Optical Filter - Glass Light Attenuation Sheet for...

Zinc Selenide (ZnSe) Focusing Lens - 1 Piece Optical Welding Machine Accessories,...

DIY Astronomical Telescope Lens Set for 70 mm and 80 Telescopes Convexoconcave...

Achromatic lens D70 mm for DIY astronomical telescope (Focal options: 400mm, 280mm,...

Double Convex K9 Optical Glass Lens, Diameter 20-58mm, Focal Length 40-200mm(D50 F200 C4.9 E2)

High Precision K9 Optical Reflector Lens - Square/Round, Aluminium Coated, Pack of...

Germanium Lens with AR+DLC Coating - Optical/Thermal Image Thermometer Observation Window 1...

Astronomical Reflector Telescope, Spherical Primary Mirror and 35mm Secondary - for Astronomy...

Neutral Density Optical Filter Sheet - 12.5mm/25mm Diameter, H-K9L Glass, for Photographic...

Zinc Selenide (ZnSe) Focusing Lens - 1PCS Optical Welding Machine Accessory, 99.8%...

Newtonian Parabolic Reflector Primary Mirror Lens D160F800, Aperture 160mm, Focal Length 800mm.

High Precision K9 Optical Reflector Lens - Square/Round, Aluminium Coated, Pack of...

High Transmission Optical 850nm Glass Filter Lens - Cut off Visible Light,...

Achromatic Lens D40 for DIY Refractive Telescope Diameter 40 mm, Focal Length...

360 Degree Rotation Controller for Astronomical Telescopes Compatible Accessories M42, M48 and M54(S8252 CAA)

Achromatic Lens D40 for DIY Refractive Telescope Diameter 40 mm, Focal Length...

Germanium lens with AR+DLC coating for Thermal Imager and Optical Applications -...

D106F600 D106F900 Double Film Lens for Astronomical Telescopes - 106 mm Diameter...

850nm High Transmittance Optical Glass Filter Lens - Visible Light Cutting, Narrow...

Achromatic Lens D40 for DIY Refractive Telescope Diameter 40 mm, Focal Length...

D60 mm Double Separated Multilayer Green Film Lens for DIY Refractor Astronomical Telescopes (D60F800)

Achromatic lens D70 mm for DIY astronomical telescope (Focal options: 400mm, 280mm,...

154mm High Definition Dual Separation Lens for Refractive Astronomical Telescopes (D154F750 Single-Layer)

Germanium lens with AR+DLC coating for Thermal Imager and Optical Applications -...

Zinc Selenide (ZnSe) Focusing Lens - 1 Piece Optical Welding Machine Accessories,...

D131F700 Double Separation Multilayer Lens for Astronomical Telescopes (Caliber 131mm)

60mm Refractive Astronomical Telescope Lens with Single Sided Blue Film for DIY Telescopes F300-F900mm(D60F900)