SIRIUS: a near-infrared simultaneous three-band camera

Takahiro Nagayama; Chie Nagashima; Yasushi Nakajima; Tetsuya Nagata; Shuji Sato; Hidehiko Nakaya; Tomoyasu Yamamuro; Koji Sugitani; Motohide Tamura

doi:10.1117/12.460770

7 March 2003 SIRIUS: a near infrared simultaneous three-band camera

Takahiro Nagayama, Chie Nagashima, Yasushi Nakajima, Tetsuya Nagata, Shuji Sato, Hidehiko Nakaya, Tomoyasu Yamamuro, Koji Sugitani, Motohide Tamura

Author Affiliations +

Proceedings Volume 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes; (2003) https://doi.org/10.1117/12.460770
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We developed a near infrared simultaneous three-band (J, H and Ks) camera, SIRIUS. The design of SIRIUS is optimized to deep, large area surveys in the three IR bands. SIRIUS is equipped with three 1024 x 1024 HgCdTe (HAWAII) arrays, providing simultaneous three-band images. SIRIUS has obtained its first light on the UH 2.2 m telescope in August 2000. SIRIUS is now mounted on the IRSF 1.4 m telescope in Sutherland and is dedicated to deep survey in the southern sky from November 2000. On this telescope, SIRIUS provides 7'.8 x 7'.8 field of view with a pixel scale of 0".45 in all bands. The typical limiting magnitudes are J = 19.2 mag, H = 18.6 mag, Ks = 17.3 mag (15 min. integration, S/N = 10 σ). The effective exposure time (30 sec exposure for each frame) in an hour is about 37 minutes (60%) for each band. Both the instrument and the 1.4 m telescope are in operation.

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Takahiro Nagayama, Chie Nagashima, Yasushi Nakajima, Tetsuya Nagata, Shuji Sato, Hidehiko Nakaya, Tomoyasu Yamamuro, Koji Sugitani, and Motohide Tamura "SIRIUS: a near infrared simultaneous three-band camera", Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); https://doi.org/10.1117/12.460770

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