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arXiv · 2406.13854

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
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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.

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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. 2024-06-19. Overview of the Optical Design of the CMB-S4 Large Aperture Telescopes and Camera Optics. https://arxiv.org/abs/2406.13854

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