Optical design of the ultralight-weight FIRST telescope

Eri J. Cohen; Anthony B. Hull; Javier Escobedo-Torres; Daniel D. Barber; Roger A. Johnston; Donald W. Small; Aluizio Prata Jr.; Edward R. Freniere

doi:10.1117/12.390451

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3 July 2000 Optical design of the ultralight-weight FIRST telescope

Eri J. Cohen, Anthony B. Hull, Javier Escobedo-Torres, Daniel D. Barber, Roger A. Johnston, Donald W. Small, Aluizio Prata Jr., Edward R. Freniere

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Proceedings Volume 4015, Radio Telescopes; (2000) https://doi.org/10.1117/12.390451
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

The FIRST telescope will be made of carbon fiber reinforced plastic. The optics follow a two mirror near-classical Ritchey-Chretian design, but deviates from that in two respects. The secondary mirror defines the pupil of the system, and the primary mirror is uncommonly fast at f/0.5. After presenting the optical design, the sensitivities will be presented. Current work in progress will be described in the following areas; (1) secondary mirror figure correction (2) stray light (3) primary mirror gaps (4) standing wave impact on the heterodyne instrument for FIRST (HIFI).

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Eri J. Cohen, Anthony B. Hull, Javier Escobedo-Torres, Daniel D. Barber, Roger A. Johnston, Donald W. Small, Aluizio Prata Jr., and Edward R. Freniere "Optical design of the ultralight-weight FIRST telescope", Proc. SPIE 4015, Radio Telescopes, (3 July 2000); https://doi.org/10.1117/12.390451

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