GSO parabolic Newtonian primary mirror 16' diameter f/4,5

GSHS400f45

GSO Guan Sheng Optical
Delivery time expected 1 - 2 w

GSO parabolic Newtonian primary mirror 16" diameter f/4,5

949,00 EUR
incl. 19 % Tax
excl.Shipping costs

Description

Parabolic primary for Newtonian telescopes
Diameter 400mm / 16" / Focal length 1800mm - AD015

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 ... 405mm / 16"
-- Focal length ... 1800mm
-- Focal ratio ... F/4.5
-- Thickness ... 45,3mm
-- Weight ... 13,5kg
-- Reflectivity ... 94%