D104F800 DIY Astronomical Telescope Objective Glass Mirror Lens Multilayer Film For Sale
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D104F800 DIY Astronomical Telescope Objective Glass Mirror Lens Multilayer Film:
Multilayer film D = 105mm and F = 800mm for astronomical telescope objective
Focal length: F800mm
Coating: multilayer film
Combined image quality: 1 / 4-1 / 8
Diameter tolerance + 0 / - 0.12 mm
Center thickness tolerance: ± 0.2mm
Focal length tolerance: ± 0.1%
Finish: 60 / 40
Eccentricity: 1 '
Remarks: two pieces of double glue lens group;
Used for astronomical telescope objective, star finder and collimating Policy:5.Please contact us before return.6.All items will be tested before shipment, please do not use the items or damage it, used or damaged parts are not acceptable to return.7.Buyers are responsible for all cost for shipping & reshipping.response Policy:1.Positive response will be appreciate if you are pleased with your purchase.
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