The conceptual design of SCal: a facility calibration system for the Maunakea Spectroscopic Explorer

Luke M. Schmidt; Jennifer L. Marshall; Darren L. DePoy; Samuel C. Barden

doi:10.1117/12.2630252

25 August 2022 The conceptual design of SCal: a facility calibration system for the Maunakea Spectroscopic Explorer

Luke M. Schmidt, Jennifer L. Marshall, Darren L. DePoy, Samuel C. Barden

Author Affiliations +

Proceedings Volume 12186, Observatory Operations: Strategies, Processes, and Systems IX; 121861P (2022) https://doi.org/10.1117/12.2630252
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The Maunakea Spectroscopic Explorer is designed to obtain > 4000 simultaneous spectra from the optical to NIR over a 1.5 square degree field of view at multiple resolutions and with unprecedented sensitivity (m=24). A robust facility science calibration system (SCal) will be required to achieve the desired precision over many observations spaced across months or years with minimal impact to the observing efficiency. We describe the major hardware components required to perform sensitivity and wavelength calibrations, removal of sky background and other stray light or ghost signals, PSF calibration, and detection of any spurious contamination sources. Keywords: Massively multiplexed spectroscopic surveys, 10m-class telescopes, spectroscopic facility, survey facility, wide field, multi-object spectrograph, calibration.

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Luke M. Schmidt, Jennifer L. Marshall, Darren L. DePoy, and Samuel C. Barden "The conceptual design of SCal: a facility calibration system for the Maunakea Spectroscopic Explorer", Proc. SPIE 12186, Observatory Operations: Strategies, Processes, and Systems IX, 121861P (25 August 2022); https://doi.org/10.1117/12.2630252

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