✨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
وصف
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'