astrosib

ASTROSIB RC500
(Optical tube assembled)

astrosib telescopes of ritchey-chretien system rc500
astrosib telescopes of ritchey-chretien system rc500

Primary mirror diameter

508 mm

Primary focal ratio

F/3

Secondary mirror diameter

192 mm

Equivalent focal ratio

F/8

Equivalent focal length

4000 mm

Back Focus (from primary mirror surface)

355 mm

Primary to Secondary Spacing

994 mm

Mirrors material

LK-7 (optical glass with low linear expansion coefficient). By preliminary agreement, the optics made of AstroSitall can be installed

Accuracy of the optics manufacturing

RMS deviation of wave front is no more than 0.04λ, Strehl criterion is no less than 0.95. The optics quality interferometric certificate is attached to every telescope

Focal plane position

225 mm from the rear end of the tube

External thread on the backside connecting flange

M 126x1.25. It is used for mounting field rotator, adapter rings, and other equipment

Internal thread on the backside connecting flange

M 111x1. It is used for mounting the ASTROSIB FFC20 corrector

Outer dimensions

640x688x1450 mm (the length 1150 mm is presented without regard for the installing of adapters and receiving equipment)

Mass of the telescope

68 kg


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