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

Bonded Lens D30 mm for DIY Telescopes Achromatic with Optional Diameters and...

Blue Fused 60F410 Coated Achromatic Lens D60mm for Astronomical Telescopes (D62F350 Green Film)

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

D60 mm Double Separated Multilayer Green Film Lens for DIY Refractor Astronomical Telescopes (D60F360)

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

D70 70mm Double Separation Single Sided Blue Film Telescope Lens with Retaining Ring(D70F900)

Double Convex K9 Optical Glass Lens, Diameter 20-58mm, Focal Length 40-200mm(D42 F50 C8 E2.3)

1 Accessory for Reflective Astronomical Telescope D150F1200 Improved Planetary Observation (D150F1200 Primary Mirror)

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

Germanium Lens with AR+DLC Coating - Optical/Thermal Thermometer Observation Window 1 Unit(30x3mm AR+DLC)

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

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 (D60F600)

Blue Fused 60F410 Coated Achromatic Lens D60mm for Astronomical Telescopes (D60F342 Film)

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

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

1 x 60mm D60mm Blue Fused Coated Achromatic Lens for Astronomical Telescopes...

50 x mm Neutral Density Absorption Filter - Optical Light Attenuation Film...

High-Transmittance 850nm Optical Glass Filter Lens - Visible Light Cut-Off, Narrowband for...

Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(40mm)

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

Germanium Lens with AR+DLC Coating for Thermal Imager and Optical Applications - 1PCS(35x2mm AR+DLC)

Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(65mm)

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

D30 mm Bonded Lens for DIY Telescopes Achromatic with Optional Diameters and...

Germanium Lens with DLC Coating for Optical and Thermal Imaging - 1PCS(60x2mm AR+DLC)

D70 70mm Double Separation Single Sided Blue Film Telescope Lens with Retaining Ring(D70F300)

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

Germanium lens with AR+DLC coating Imager thermometer viewing window Optical/Thermal 1 piece (50x3mm AR+DLC)