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

D70 70mm Double Separation Single Sided Blue Film Telescope Lens with Retaining Ring(D70F400)

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

Germanium lens with AR+DLC coating Optical/Thermal Imager Thermometer Observation Window 1 piece...

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

Astronomical Reflector Telescope, 1 Piece Spherical Primary Mirror and 35mm Secondary -...

Germanium lens with AR+DLC coating Imager thermometer viewing window Optical/Thermal 1 piece (40x2mm AR+DLC)

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

1 x D203F750 203mm parabolic Newtonian Reflector Primary Mirror with 70mm Secondary...

90mm Double Separation Lens for Refractive Astronomical Telescopes - Multilayer Coating Available(D90F1000 Green Film)

Germanium lens with AR+DLC coating Imager thermometer viewing window Optical/Thermal 1 piece (60x2mm AR+DLC)

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

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

D60F700 Double Separation Multilayer Lens Blue Film for DIY Astronomical Telescopes Refractors,...

Zinc Selenide (ZnSe) Focus Lens: Accessory for Optical Welding Machine, 99.8% Light...

Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(35mm)

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

Zinc Selenide (ZnSe) Focus Lens: Accessory for Optical Welding Machine, 99.8% Light...

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

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

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

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

1 x D150F750 Astronomical Telescope Reflector with Spherical Primary Mirror and 35mm...

Germanium Lens with AR+DLC Coating for Thermal Imaging Cameras and Optical Applications...

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

Germanium Lens with DLC Coating for Optical and Thermal Imaging - 1PCS(40x2mm AR+DLC)

Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(60mm)

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

Germanium Lens with AR+DLC Coating for Thermal Imaging Cameras and Optical Applications...

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