CCAT-prime: mirror panel manufacture for FYST

Ronan Higgins; Stephen Parshley; Xiaodong Ren; Jörg Kronshage; Scott Gramke; Michele Limon

doi:10.1117/12.2628792

29 August 2022 CCAT-prime: mirror panel manufacture for FYST

Ronan Higgins, Stephen Parshley, Xiaodong Ren, Jörg Kronshage, Scott Gramke, Michele Limon

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121882R (2022) https://doi.org/10.1117/12.2628792
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The Fred Young Submillimeter Telescope (FYST) is a 6-meter diameter telescope with a surface accuracy of 10.7 microns, operating at submillimeter to millimeter wavelengths (100 GHz – 1.5 THz). It will be located at 5600 meters elevation on Cerro Chajnantor in the Atacama desert of northern Chile overlooking the ALMA site. Its novel optical “crossed-Dragone” design will deliver a high-throughput, wide field-of-view telescope capable of mapping the sky very rapidly and efficiently. This paper discusses the mirror panel production and its contribution to the overall half wave front error of the telescope. The first half details the panel manufacturing precision. The effect of panel production quality on the beam shape and beam quality is presented. The second half of the paper looks at the local surface roughness of a mirror panel. Surface roughness data for a machined panel with an etched surface are presented. Some non-ideal surface features for an etched panel are discussed.

Citation Download Citation

Ronan Higgins, Stephen Parshley, Xiaodong Ren, Jörg Kronshage, Scott Gramke, and Michele Limon "CCAT-prime: mirror panel manufacture for FYST", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121882R (29 August 2022); https://doi.org/10.1117/12.2628792

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