WEAREONE Astronomical Telescope DIY Accessories 80 Series Refractive HD Achromatic Objective Lenses Blue Film-F400/500/600/700/800/900mm (D80 F700)

Description

• Astronomical telescope objective D80 aperture: 80mm focal length:400mm/500mm/600mm/700mm/800mm/900mm 500mm
• Astronomical telescope optical system: refraction
• Double separation design: consisting of 2 separate lenses with a special 0.2mm thick spacer placed in between
• Used as an accessory for adult astronomical telescopes, science labs, education, etc.
• Packing: product independent packaging

Astronomical telescope objective D=83mm F=400mm/500mm/600mm/800mm/900mm multi-layer blue film
Caliber D: 83mm
Focal length F: 400mm/500mm/600mm/800mm/900mm
Coating: four sides of multi-layer blue film
Combined image quality: 1/4-1/8
Diameter tolerance:+0/-0.12 mm
Center thickness tolerance:0.2mm
Focal length tolerance:0.1%
Brightness:60/40
Eccentricity:1'

Astronomical telescope objective D=83mm F=700mm single layer blue film
Caliber D:83mm
Focal length F:700mm
Coating:single blue film
Combined image quality:1/4-1/8
Diameter tolerance:+0/-0.12 mm
Center thickness tolerance:0.2mm
Focal length tolerance:0.1%
Brightness:60/40
Eccentricity:1'

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