HOLOGRAPHIC MEASUREMENT ON MEDICINA RADIO TELESCOPE USING ARTIFICIAL-SATELLITES AT 11 GHZ

The surface profile of the 32-m parabolic radiotelescope located in Me dicina has been measured with the Misell phase-recovery technique usin g commercial geostationary satellites at 11 GHz and checked on H2O ast ronomical masers at 22 GHz as reference sources. The telescope is a pa rabolic reflector antenna operating in Cassegrain configuration and de signed for observations up to the frequency of 23 GHz. The accuracy ob tained with this technique is about 0.2 mm and the spatial resolution is 0.7 m.