Enabling new discoveries by enhancing current and future telescopes with CSTARS: the calibration satellite for traceable astrophysical radiometric standards

Dmitry Vorobiev; Peter Zimmer; Destry Dewitt; Dean Hines; John McGraw

doi:10.1117/12.2629467

27 August 2022 Enabling new discoveries by enhancing current and future telescopes with CSTARS: the calibration satellite for traceable astrophysical radiometric standards

Dmitry Vorobiev, Peter Zimmer, Destry Dewitt, Dean Hines, John McGraw

Author Affiliations +

Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave; 1218009 (2022) https://doi.org/10.1117/12.2629467
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Observations of standard stars and calibration sources are critical to most astronomical observations. Many of the scientific goals and questions recently highlighted in the Decadal Survey on Astronomy and Astrophysics 2020 require more precise calibration of telescopes and instruments than is possible with current methods. We present the Calibration Satellite for Traceable Astrophysical Radiometric Standards (CSTARS) mission concept. CSTARS is a small space telescope and spectroradiometer, whose absolute spectral response is traceable to NIST standards with an uncertainty of < 0.3%. CSTARS will be able to characterize and monitor the absolute spectral energy distribution of dozens of stars, including the white dwarfs commonly used to calibrate the Hubble Space Telescope and the most stable G-type dwarfs found so far. Once characterized, these targets may be used to calibrate a wide range of astronomical telescopes and instruments, on the ground and in space.

Conference Presentation

Citation Download Citation

Dmitry Vorobiev, Peter Zimmer, Destry Dewitt, Dean Hines, and John McGraw "Enabling new discoveries by enhancing current and future telescopes with CSTARS: the calibration satellite for traceable astrophysical radiometric standards", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 1218009 (27 August 2022); https://doi.org/10.1117/12.2629467

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