Development of flat fielding method in MIR for accurate photometry with TAO/MIMIZUKU

Tsubasa Michifuji; Takafumi Kamizuka; Takashi Miyata; Shigeyuki Sako; Ryou Ohsawa; Kentaro Asano; Masahito S. Uchiyama; Tomohiro Mori; Yutaka Yoshida; Kengo Tachibana; Mizuho Uchiyama

doi:10.1117/12.2561298

13 December 2020 Development of flat fielding method in MIR for accurate photometry with TAO/MIMIZUKU

Tsubasa Michifuji, Takafumi Kamizuka, Takashi Miyata, Shigeyuki Sako, Ryou Ohsawa, Kentaro Asano, Masahito S. Uchiyama, Tomohiro Mori, Yutaka Yoshida, Kengo Tachibana, Mizuho Uchiyama

Author Affiliations +

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114479M (2020) https://doi.org/10.1117/12.2561298
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

‘Field Stacker’ is a unique system mounted on MIMIZUKU, a mid-infrared instrument for the TAO 6.5-m telescope. This system obtains a pair of distant targets simultaneously and aims at performing relative photometry with an accuracy of a few percent. A key to achieve the accurate relative photometry is precise flat fielding. We have developed a new method for the flat fielding using time variation of the sky background. We analyzed the data obtained in an engineering observation at the Subaru in 2018. The error of the flat fielding and the total error propagated from the flat fielding are estimated to be 0.2–0.3% and 0.5%, respectively.

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Tsubasa Michifuji, Takafumi Kamizuka, Takashi Miyata, Shigeyuki Sako, Ryou Ohsawa, Kentaro Asano, Masahito S. Uchiyama, Tomohiro Mori, Yutaka Yoshida, Kengo Tachibana, and Mizuho Uchiyama "Development of flat fielding method in MIR for accurate photometry with TAO/MIMIZUKU", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114479M (13 December 2020); https://doi.org/10.1117/12.2561298

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