2018/07/31 by Norio Narita, Akihiko Fukui, Nobuhiko Kusakabe +19 · 82 citations
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #CCD and CMOS Imaging Sensors #Exoplanet #Pixel #Planet #Satellite #Spitzer Space Telescope #Stars #Stellar, planetary, and galactic studies #Telescope #Transit (satellite) #astro-ph.EP #astro-ph.IM #astro-ph.SR
paper · pdf · doi:10.1117/1.jatis.5.1.015001
published in Journal of Astronomical Telescopes Instruments and Systems 5(01), 1 (SPIE) · 21 pages, 13 figures, 5 tables, Published in JATIS on Dec 27, 2018, the open access article is available http://dx.doi.org/10.1117/1.JATIS.5.1.015001
openalex created_date 2018/07/10 · openalex publication_date 2018/12/27 · arxiv created 2018/12/30 · arxiv updated 2019/01/01 · openalex updated_date 2026/08/06
We report the development of a four-color simultaneous camera for the 1.52-m Telescopio Carlos Sánchez in the Teide Observatory, Canaries, Spain. The instrument, named MuSCAT2, has a capability of four-color simultaneous imaging in g (400 to 550 nm), r (550 to 700 nm), i (700 to 820 nm), and zs (820 to 920 nm) bands. MuSCAT2 equips four 1024 × 1024 pixel CCDs, having a field of view of 7.4 × 7.4 arc min2 with a pixel scale of 0.44 arc sec per pixel. The principal purpose of MuSCAT2 is to perform high-precision multicolor exoplanet transit photometry. We demonstrate photometric precisions of 0.057%, 0.050%, 0.060%, and 0.076% as root-mean-square residuals of 60 s binning in g, r, i, and zs bands, respectively, for a G0 V star WASP-12 (V = 11.57 ± 0.16). MuSCAT2 has started science operations since January 2018, with over 250 telescope nights per year. MuSCAT2 is expected to become a reference tool for exoplanet transit observations and substantially contributes to the follow-up of the Transiting Exoplanet Survey Satellite and Planetary Transits and Oscillations of stars space missions.