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Germanium Lens with DLC Coating for Optical and Thermal Imaging - 1PCS(11.8x1mm 2-Sided AR)

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

Germanium Lens with AR+DLC Coating for Thermal Imagers and Optical Applications -...

Newton D305F1200 Parabolic Reflector Primary Mirror, 305 mm Aperture, 1200 Focal, for...

Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(30mm)

50mm Refractive Double Separation Lens for Telescopes and Viewfinders (D50F360)

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

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

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

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

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

1 x Newtonian Parabolic Reflector Primary Mirror D130F650 with 35mm Secondary - AR0948(D130F650+35mm)

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

Short axis secondary mirror for DIY reflection astronomical telescopes (20 to 70...

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

60mm Refractive Astronomical Telescope Lens with Single Sided Blue Film for DIY Telescopes F300-F900mm(D60F400)

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

1 x D203F800 203mm Parabolic Newtonian Reflector Primary Mirror with 60mm Secondary (70mm Mirror)

Gallium Arsenide Optical Lenses, Leaf Focusing Lenses for Strong Light Applications, Pack...

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

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

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

1 x Parabolic Reflector Lens D114F450 High Precision Primary and Secondary Mirror...

Germanium Lens with DLC Coating for Optical and Thermal Imaging - 1...

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

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

Telescope Accessory, 1.25 Eyepiece Barlow Lens Aluminium Alloy 5X Astronomical Inch

Germanium lens with AR+DLC coating Imager thermometer viewing window Optical/Thermal 1 piece (30x1mm AR+DLC)

Double Convex K9 Optical Glass Lens, Diameter 20-58mm, Focal Length 40-200mm(D23 F30 C5.5 E2)

Gallium Arsenide Optical Lenses, Blade Focus Lenses for Strong Light Applications, 1...