Sky-subtraction for the Subaru Prime Focus Spectrograph

Jared C. Siegel; Michael A. Strauss; Robert H. Lupton; Paul Price; Kiyoto Yabe; Craig Loomis; Arnaud Le Fur; James E. Gunn; Naoyuki Tamura

doi:10.1117/12.3015628

18 July 2024 Sky-subtraction for the Subaru Prime Focus Spectrograph

Jared C. Siegel, Michael A. Strauss, Robert H. Lupton, Paul Price, Kiyoto Yabe, Craig Loomis, Arnaud Le Fur, James E. Gunn, Naoyuki Tamura

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130962M (2024) https://doi.org/10.1117/12.3015628
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Subaru Prime Focus Spectrograph (PFS) will soon be the first massively multiplexed wide-field spectrograph on an 8-meter class telescope. PFS’s spectrograph system covers the optical to near-infrared—380 to 1260 nm—in a single exposure and is fed by 2394 reconfigurable fibers distributed across a 1.3-degree wide field of view. Building upon deep multiband imaging catalogs, particularly from Subaru’s Hyper Suprime-Cam (HSC) imager, PFS will fuel future discoveries in cosmology, galaxy evolution, and galactic archaeology. To fully leverage Subaru’s 8.2 meter aperture and probe the faintest targets, accurate spectral reduction and sky subtraction are critical to PFS’s operation. During commissioning of PFS, the accuracy of the sky-subtraction algorithms is being assessed through direct observations of the night sky. In this paper, we report the current status of the sky-subtraction routines, as determined from the commissioning data.

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Jared C. Siegel, Michael A. Strauss, Robert H. Lupton, Paul Price, Kiyoto Yabe, Craig Loomis, Arnaud Le Fur, James E. Gunn, and Naoyuki Tamura "Sky-subtraction for the Subaru Prime Focus Spectrograph", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130962M (18 July 2024); https://doi.org/10.1117/12.3015628

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