GSO parabolic Newtonian primary mirror 8' diameter f/6

GSHS200f6

GSO Guan Sheng Optical
in stock

GSO parabolic Newtonian primary mirror 8" diameter f/6

177,00 EUR
incl. 19 % Tax
excl.Shipping costs

Description

Parabolic primary for Newtonian telescopes
Diameter 200mm / 8" / Focal length 1200mm - AD082

For the amateur telescope maker, GSO manufactures high-end parabolic mirrors with very precise and smooth surface.

Substrate ... All GSO mirrors use, according to the manufacturer, the optical BK7 glass as substrate. BK7 is a very homogenous material.

Accuracy ... The surface of the parabolic mirror is at least diffraction limited. The roughness is better than 1/16 wave RMS.

Reflectivity ... Each mirror bears an aluminum layer of 94% reflectivity. This layer is quartz overcoated for protection. Hence the coating is tough and resistent against age effects.

Technical data of the mirror:

-- Diameter ... 200mm / 8"
-- Focal length ... 1200mm
-- Focal ratio ... F/6
-- Thickness ... 25mm
-- Weight ... 1,9kg
-- Reflectivity ... 94%