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1 Piece DIY Astronomical Telescope Lens Set for Xingtrang 70/80 Caliber -...

1 x Dual Separation Objective Lens for 90mm Refractive Astronomical Telescope -...

1pc D203F750 203mm Newtonian Parabolic Reflector Primary Mirror with 70mm Secondary -...

1 x Dual Separation Objective Lens for 90mm Refractive Astronomical Telescope -...

Neutral Density Optical Filter Sheet-12.5mm/25mm Diameter, 50x50mm Size, 0.1-1.0, H-K9L Float Glass.1pc(Round D12.5mm Density0.6)

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

1 Refractive objective lens for 60 mm astronomical telescope. Focal distance: 300-900...

Neutral Density Optical Filter Sheet-12.5mm/25mm Diameter, 50x50mm Size, 0.1-1.0, H-K9L Float Glass.1pc(Round D25mm Density0.1)

20mm Neutral Density Filter with Mounting Bracket - C-Mount/SM1 Threads Optical -1pc(2%...

Light Filter for Black and White Photography - Optical Glass Color Correcting Filter, 1PCS(72mm)

Light Filter for Black and White Photography - Optical Glass Color Correcting Filter, 1PCS(37mm)

1 Refractive Double Separation Blue Film Objective Lens for Telescopes - Caliber...

Circular Polarizing Film - 1PCS Round Sheet for Optical Experiments, Photography-1pc(Right 200x0.26mm No-sticky)

1 Refractive objective lens for 60 mm astronomical telescope. Focal distance: 300-900...

Circular Polarizing Film - 1PCS Round Sheet for Optical Experiments, Photography-1pc(200x0.2mm Non-sticky)

Green Film Achromatic Lens Stick D80 mm for DIY Astronomical Telescopes -...

Light Filter for Black and White Photography - Optical Glass Color Correcting Filter, 1PCS(27mm)

Neutral Density Optical Filter Sheet-12.5mm/25mm Diameter, 50x50mm Size, 0.1-1.0, H-K9L Float Glass.1pc(Round D25mm Density0.2)

Absorption-Type Neutral Density Optical Filter - 50x50mm Square Attenuation Sheet-1pc(90% Transmittance)

Light Filter for Black and White Photography - Optical Glass Color Correcting Filter, 1PCS(34mm)

1pc D60F700 Double Separated Multilayer Blue Film Objective Lens for DIY Refracting Astronomical Telescopes

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

Absorption-Type Neutral Density Optical Filter - 50x50mm Square Attenuation Sheet-1pc(30% Transmittance)

High-Transmittance 850nm Optical Glass Filter Lens - Narrowband Infrared for Cameras, Sensors-1pc(39x1mm)

Light Filter for Black and White Photography - Optical Glass Color Correcting Filter, 1PCS(55mm)

Absorption-Type Neutral Density Optical Filter - 50x50mm Square Attenuation Sheet-1pc(79% Transmittance)

Circular Polarizing Film - 1PCS Round Sheet for Optical Experiments, Photography-1pc(Left 150x0.26mm No-sticky)

High-Transmittance 850nm Optical Glass Filter Lens - Narrowband Infrared for Cameras, Sensors-1pc(17.2x1.6mm)

1pc Short-Axis Secondary Mirror for DIY Reflecting Astronomical Telescopes - 20/25/35/40/70mm Options Available(54mm)

Circular Polarizing Film - 1PCS Round Sheet for Optical Experiments, Photography-1pc(100x0.2mm Non-sticky)