@inproceedings{d16bf13492e94e6db6eab76c2c592a46,
title = "Cold optical design for the large aperture Simons' Observatory telescope",
abstract = "The Simons Observatory will consist of a single large (6 m diameter) telescope and a number of smaller (∼0.5 m diameter) refracting telescopes designed to measure the polarization of the Cosmic Microwave Background to unprecedented accuracy. The large aperture telescope is the same design as the CCAT-prime telescope, a modified Crossed Dragone design with a field-of-view of over 7.8 degrees diameter at 90 GHz. This paper presents an overview of the cold reimaging optics for this telescope and what drove our choice of 350-400 mm diameter silicon lenses in a 2.4 m cryostat over other possibilities. We will also consider the future expandability of this design to CMB Stage-4 and beyond.",
keywords = "Crossed Dragone, cryogenic optical design, silicon lenses, Simons Observatory",
author = "Dicker, \{S. R.\} and Gallardo, \{P. A.\} and Gudmudsson, \{J. E.\} and Mauskopf, \{P. D.\} and A. Ali and Ashton, \{P. C.\} and G. Coppi and Devlin, \{M. J.\} and N. Galitzki and Ho, \{S. P.\} and Hill, \{C. A.\} and J. Hubmayr and B. Keating and Lee, \{A. T.\} and M. Limon and F. Matsuda and J. McMahon and Niemack, \{M. D.\} and Orlowski-Scherer, \{J. L.\} and L. Piccirillo and M. Salatino and Simon, \{S. M.\} and Staggs, \{S. T.\} and R. Thornton and Ullom, \{J. N.\} and Vavagiakis, \{E. M.\} and Wollack, \{E. J.\} and Z. Xu and N. Zhu",
note = "Funding Information: This work was supported in part by a grant from the Simons Foundation (Award \#457687, B.K.). We would also like to acknowledge the productive collaboration with the CCAT-prime team in the design of the telescope. MDN acknowledges support from NSF award AST-1454881. Publisher Copyright: {\textcopyright} 2018 SPIE.; Ground-Based and Airborne Telescopes VII 2018 ; Conference date: 10-06-2018 Through 15-06-2018",
year = "2018",
doi = "10.1117/12.2313444",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Marshall, \{Heather K.\} and Jason Spyromilio",
booktitle = "Ground-Based and Airborne Telescopes VII",
address = "United States",
}