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THE 1.22 TELESCOPE

Dedicated in 1942 to Galileo Galilei on the third centenary of his death.

The 122 cm telescope is a reflector constructed in 1940/42 by the firm Officine Galileo in Florence. It is of a conventional design, having a parabolic primary mirror, and two secondary mirrors providing Newtonian and Cassegrain foci. The primary mirror has a clear aperture of 120 cm, a focal length of 600 cm and is paraboidal with a central hole of 19.5 cm diameter. All mirrors are made of pyrex glass.

The mounting is of the English type with north and south piers supporting a polar axis with the tube offset and short declination axis. The north pier does not permit full sky coverage about the pole. The telescope has a completely enclosed tube; the entire upper end of the tube can be rotated about the optical axis for ease of observation at the Newtonian focus. The rear end of the tube contains the adjustment system for the primary mirror cell. The latter is supported axially by 18 pads and radially by a system of 24 lever counter balance units equally spaced around the cell. The mirror cell is created using a variable iris diaphragm.


Observing at 122 cm

The Telescope

Instrumentation

Meteo Statistics archive (from 1997 to 2002 in italian)


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