Overview of the optical design of the CMB-S4 large aperture telescopes and camera optics

Patricio A. Gallardo; Kathleen Harrington; Roberto Puddu; Bradford Benson; John Carlstrom; Nick Emerson; Jeff McMahon; Tyler Natoli; Johanna M. Nagy; Michael D. Niemack; John Ruhl

doi:10.1117/12.3020608

11 September 2024 Overview of the optical design of the CMB-S4 large aperture telescopes and camera optics

Patricio A. Gallardo, Kathleen Harrington, Roberto Puddu, Bradford Benson, John Carlstrom, Nick Emerson, Jeff McMahon, Tyler Natoli, Johanna M. Nagy, Michael D. Niemack, John Ruhl

Author Affiliations +

Proceedings Volume 13094, Ground-based and Airborne Telescopes X; 130942F (2024) https://doi.org/10.1117/12.3020608
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

CMB-S4, the next-generation CMB observatory, will deploy hundreds of thousands of detectors to enable mapping the millimeter-wavelength sky with unprecedented speed. The large aperture telescopes for CMB-S4 consist of six-meter diameter crossed Dragone designs and a five-meter diameter three-mirror anastigmat. The two-mirror crossed Dragone design requires astigmatism corrections in the refractive optics to achieve diffraction-limited performance. We present biconic lens corrections for the CMB-S4 crossed Dragone camera optics and compare these designs to the camera optics for the three mirror anastigmat, as the optical designs of the cameras for these telescopes are being prototyped.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Patricio A. Gallardo, Kathleen Harrington, Roberto Puddu, Bradford Benson, John Carlstrom, Nick Emerson, Jeff McMahon, Tyler Natoli, Johanna M. Nagy, Michael D. Niemack, and John Ruhl "Overview of the optical design of the CMB-S4 large aperture telescopes and camera optics", Proc. SPIE 13094, Ground-based and Airborne Telescopes X, 130942F (11 September 2024); https://doi.org/10.1117/12.3020608

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