Abstract

A three-mirror rotationally symmetric telescope has been designed in which the secondary and tertiary mirrors are behind the primary. In this configuration the mounting structure of the secondaries need not interrupt the light path, thus avoiding the production of undersirable diffraction sidelobes. In a 1° total field of view the image blur circle is less than 3 arcmin. The design has application in the millimeter and submillimeter wavelength regions for problems in which low response to far-off-axis sources is critical.

© 1993 Optical Society of America

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Author Affiliations

H. P. Gush

The author is with the Department of Physics, University of British Columbia, 6224 Agricultural Road, Vancouver, B.C. V6T 1Z1, Canada.

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