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1 x 60 mm refractive lens for astronomical telescopes with single-sided blue...

1 Piece D106 106mm Refractive Lens for Astronomical Telescopes - Double Focal...

20mm Neutral Density Filter C-Mount/SM1 Compatible, Optical with 0.01%-10% Transmittance,1PCS(10% Transmittance C-Mount Thread)

High-Transmittance 850nm Optical Glass Filter Lens - Visible Light Cut-Off, Narrowband 1PCS(8x0.5mm)

50mm x Absorption-Type Neutral Density Optical Filter - Glass 1PCS(1% Transmittance)

1 x D114F450 Parabolic Reflector Lens Primary and Secondary Mirror for DIY...

850nm High Transmittance Optical Glass Filter Lens - Visible Light Cutting, Narrow Band 1PC(13.8x1.0mm)

1 x 60mm Green Multi-Layer Double Separation Lens for DIY Refractor Astronomical Telescope(D60F800)

1 Objective Lens for D106 106mm Refractor Astronomical Telescope, Dual Focal Distance...

1 x 60mm Green Multi-Layer Double Separation Lens for DIY Refractor Astronomical Telescope(D60F360)

High-Transmittance 850nm Optical Glass Filter Lens - Visible Light Cut-Off, Narrowband 1PCS(8x8x0.9mm)

50mm x Absorption-Type Neutral Density Optical Filter - Glass 1PCS(0.1% Transmittance)

1pc D60mm Glued Objective Lens - 60F410 Fused Blue-Coated Achromatic for Astronomical...

1 x D80mm Green Film Glued Achromatic Lens for DIY Astronomical Telescopes...

1 Piece D203F800 203mm Newton Parabolic Reflector Primary Mirror, 60mm - DIY...

1 x 60 mm refractive lens for astronomical telescopes with single-sided blue...

Short Axis Secondary Mirror for DIY Reflection Astronomical Telescopes (Options 20/25/35/40/70mm Available)(35mm)

High-Precision Neutral Density Optical Filter Sheet 0.1-1.0, 1 PCS(Square WxL50x50mm Density1)

1pc D160F800 Parabolic Newtonian Reflector Primary Mirror Objective - 160mm Aperture, 800mm Focal Length

Short Axis Secondary Mirror for DIY Reflection Astronomical Telescopes (Options 20/25/35/40/70mm Available)(30mm)

Light Filter for Black and White Cameras - Optical Glass Color Correcting...

1 x 154mm High Definition Dual Separation Lens - 750mm/1200mm Focal Length...

Lens Set for Astronomical Telescope (1 Piece) DIY Projects, Compatible with Xingtrang...

30mm Aperture Refractive Astronomical Lens 1 Piece Bonded Series DIY Accessory for...