Optical and opto-mechanical design of the PRIMA telescope

J. Michael Rodgers; James P. McGuire; Robert J. Calvet

doi:10.1117/12.2676221

24 October 2023 Optical and opto-mechanical design of the PRIMA telescope

J. Michael Rodgers, James P. McGuire, Robert J. Calvet

Proceedings Volume 12676, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts XI; 126760B (2023) https://doi.org/10.1117/12.2676221
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The PRIMA (Probe Far-Infrared Mission for Astrophysics) system will be a 1.8 meter, multi-mode, cryogenic, far-infrared space-based observatory consisting of a collecting afocal telescope followed by multiple spectrometer and imager instruments. The afocal telescope collects light from targets across a total field of view that is selectable by means of two different internal scan mirrors, one each for the spectrometers and the imagers. The primary and secondary mirrors are common to both instrument groups, and working with an angular field offset between instruments. The optics after the secondary and up to the scan mirrors are separate. The telescope provides two separate collimated and demagnified beams emerging from the scan mirrors to the spectrometer and imager instrument groups. Design-driving factors include the need to demagnify the entrance beam to fit a heritage scan mirror, and the need for an accessible field stop located clear of any mirror. This paper describes the requirements, configuration trade and development, preliminary optical design, and performance analysis of the telescope.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

J. Michael Rodgers, James P. McGuire, and Robert J. Calvet "Optical and opto-mechanical design of the PRIMA telescope", Proc. SPIE 12676, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts XI, 126760B (24 October 2023); https://doi.org/10.1117/12.2676221

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