Optimum location of the wobble axis of secondary mirrors in Cassegrain-type telescopes

Details Optimum location of the wobble axis of secondary mirrors in Cassegrain-type telescopes Optimum location of the wobble axis of secondary mirrors in Cassegrain-type telescopes

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984itap...32.1128v&link_type=abstract

IEEE Transactions on Antennas and Propagation (ISSN 0018-926X), vol. AP-32, Oct. 1984, p. 1128, 1129.

Physics

Optics

1

Cassegrain Optics, Mirrors, Reflecting Telescopes, Axes Of Rotation, Infrared Telescopes, Millimeter Waves, Optimization, Radio Telescopes, Submillimeter Waves

Scientific paper

The best position for the rotation axis of the wobbling secondary mirror in a Cassegrain type of antenna is through the focal point of the main mirror: the prime focus. Compared to the usual situation, where the axis of rotation contains the vertex of the secondary mirror, this means a considerable improvement of beam quality, especially at large wobble angles.

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