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Absorption Type Neutral Density Optical Filter 50x50mm - Glass Light Attenuation Sheet...
Astronomical Reflector Telescope, 1 Piece Spherical Primary Mirror and 35mm Secondary -...
Germanium Lens with DLC Coating for Optical and Thermal Imaging - 1PCS(20x1mm 2-Sided AR)
Achromatic Lens D70 mm for DIY Astronomical Telescope (Focal Options: 400mm, 280mm,...
Achromatic Lens D40 for DIY Refractive Telescope Diameter 40 mm, Focal Length...
High Precision K9 Optical Reflector Lens - Square/Round, Aluminium Coated, Pack of...
Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(60mm)
60mm Refractive Astronomical Telescope Lens with Single Sided Blue Film for DIY Telescopes F300-F900mm(D60F800)
High-Transmittance 850nm Optical Glass Filter Lens - Visible Light Cut-Off, Narrowband for...
Germanium Lens with DLC Coating for Optical and Thermal Imaging - 1PCS(15x2mm 2-Sided AR)
D60F700 Double Separation Multilayer Lens Blue Film for DIY Astronomical Telescopes Refractors,...
Achromatic lens D70 mm for DIY astronomical telescope (Focal options: 400mm, 280mm,...
Newtonian Parabolic Reflector Primary Mirror Lens D160F800, Aperture 160mm, Focal Length 800mm.
1 x D203F750 203mm Parabolic Newtonian Reflector Primary Mirror with 70mm Secondary...
Zinc Selenide (ZnSe) Focusing Lens - 1 Piece Optical Welding Machine Accessories,...
D131F1200 Double Separation Multilayer Lens for Astronomical Telescopes (Caliber 131mm)
Neutral Density Optical Filter Sheet - 12.5mm/25mm Diameter, H-K9L Glass, for Photography...
Secondary Mirror Short Axis for DIY Reflection Astronomical Telescopes (20-70mm Options Available)(38mm)
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(D70F360)
1 x 60mm D60mm Blue Fused Coated Achromatic Lens for Astronomical Telescopes...
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