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Proceedings Paper

Modified Rumsey Telescope and associated elasticity design for active aspherization
Author(s): Gerard R. Lemaitre
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Paper Abstract

The three-mirror Rumsey telescope is a flat field anastigmat. Compared to the curved field Schmidt telescope, its compactness and full achromaticity are particularly interesting features for potential CCD mosaics. In counterpart the difficulties involved in aspherizing the three mirrors explain the fact that no such telescope is presently being built for larger sizes than 30-cm primaries. This paper provides solutions to this problem via active optics methods; it considers the case where the tertiary is linked in a continuous geometry to the primary, both mirrors being aspherized from a same sphere. The optical and elasticity designs of a 1-meter telescope are presented. The active aspherization can be achieved as well by stress polishing as in situ at the telescope.

Paper Details

Date Published: 21 March 1997
PDF: 14 pages
Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); doi: 10.1117/12.269067
Show Author Affiliations
Gerard R. Lemaitre, Observatoire de Marseille (France)

Published in SPIE Proceedings Vol. 2871:
Optical Telescopes of Today and Tomorrow
Arne L. Ardeberg, Editor(s)

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