TY - GEN
T1 - The optical design of the six-meter CCAT-prime and Simons Observatory telescopes
AU - Parshley, Stephen C.
AU - Niemack, Michael
AU - Hills, Richard
AU - Dicker, Simon R.
AU - Dünner, Rolando
AU - Erler, Jens
AU - Gallardo, Patricio A.
AU - Gudmundsson, Jon E.
AU - Herter, Terry
AU - Koopman, Brian J.
AU - Limon, Michele
AU - Matsuda, Frederick T.
AU - Mauskopf, Philip
AU - Riechers, Dominik A.
AU - Stacey, Gordon J.
AU - Vavagiakis, Eve M.
N1 - Funding Information:
Acknowledgements: CCAT-prime funding has been provided by Cornell University, the Fred M. Young Jr. Charitable Fund, the German Research Foundation (DFG) through grant number INST 216/733-1 FUGG, the Univ. of Cologne, the Univ. of Bonn, and the Canadian Atacama Telescope Consortium. Part of this work was supported by a grant from the Simons Foundation (Award #457687, B.K.). MDN acknowledges support from NSF award AST-1454881. RD thanks CONICYT for grants PIA Anillo ACT-1417 and QUIMAL 160009.
Publisher Copyright:
© 2018 SPIE.
PY - 2018
Y1 - 2018
N2 - A common optical design for a coma-corrected, 6-meter aperture, crossed-Dragone telescope has been adopted for the CCAT-prime telescope of CCAT Observatory, Inc., and for the Large Aperture Telescope of the Simons Observatory. Both are to be built in the high altitude Atacama Desert in Chile for submillimeter and millimeter wavelength observations, respectively. The design delivers a high throughput, relatively flat focal plane, with a field of view 7.8 degrees in diameter for 3 mm wavelengths, and the ability to illuminate >100k diffraction-limited beams for < 1 mm wavelengths. The optics consist of offset reflecting primary and secondary surfaces arranged in such a way as to satisfy the Mizuguchi-Dragone criterion, suppressing first-order astigmatism and maintaining high polarization purity. The surface shapes are perturbed from their standard conic forms in order to correct coma aberrations. We discuss the optical design, performance, and tolerancing sensitivity. More information about CCAT-prime can be found at ccatobservatory.org and about Simons Observatory at simonsobservatory.org.
AB - A common optical design for a coma-corrected, 6-meter aperture, crossed-Dragone telescope has been adopted for the CCAT-prime telescope of CCAT Observatory, Inc., and for the Large Aperture Telescope of the Simons Observatory. Both are to be built in the high altitude Atacama Desert in Chile for submillimeter and millimeter wavelength observations, respectively. The design delivers a high throughput, relatively flat focal plane, with a field of view 7.8 degrees in diameter for 3 mm wavelengths, and the ability to illuminate >100k diffraction-limited beams for < 1 mm wavelengths. The optics consist of offset reflecting primary and secondary surfaces arranged in such a way as to satisfy the Mizuguchi-Dragone criterion, suppressing first-order astigmatism and maintaining high polarization purity. The surface shapes are perturbed from their standard conic forms in order to correct coma aberrations. We discuss the optical design, performance, and tolerancing sensitivity. More information about CCAT-prime can be found at ccatobservatory.org and about Simons Observatory at simonsobservatory.org.
KW - coma correction
KW - cross-Dragone
KW - optical design
KW - submillimeter
KW - telescope optics
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U2 - 10.1117/12.2314073
DO - 10.1117/12.2314073
M3 - Conference contribution
AN - SCOPUS:85051263712
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Ground-Based and Airborne Telescopes VII
A2 - Marshall, Heather K.
A2 - Spyromilio, Jason
PB - SPIE
T2 - Ground-Based and Airborne Telescopes VII 2018
Y2 - 10 June 2018 through 15 June 2018
ER -