1.65 m. Telescope

165 cm telescope

Diameter of the primary mirror (sital=cervit)	165 cm
Focal length of the primary mirror	492 cm
Focal ratio of the primary mirror	1:3
Thickness of the primary mirror at the edge	22 cm
Diameter of the central hole	30 cm
Diameter of the secondary mirror	45 cm
Equivalent focal length of the sistem	1968 cm
Focal ratio of the Ritchey-Chretien system	1:12
Field diameter of Richey - Chrétien	20 cm=35'
Field diameter	30 mm
Focus offset from the surface of the primary mirror	72 cm
Image scale	1 cm=1,75'
Focal reducer from	from 1/12 to 1/4 scale 1 cm = 5.25'

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