Infrared camera (IRC) onboard ASTRO-F

Takehiko Wada; Naofumi Fujishiro; Daisuke Ishihara; Hirokazu Kataza; Woojung Kim; Hideo Matsuhara; Toshio Matsumoto; Hiroshi Murakami; Takashi Onaka; Norihide Takeyama; Kazunori Uemizu; Munetaka Ueno; Hidenori Watarai

doi:10.1117/12.461619

5 March 2003 Infrared Camera (IRC) onboard ASTRO-F

Takehiko Wada, Naofumi Fujishiro, Daisuke Ishihara, Hirokazu Kataza, Woojung Kim, Hideo Matsuhara, Toshio Matsumoto, Hiroshi Murakami, Takashi Onaka, Norihide Takeyama, Kazunori Uemizu, Munetaka Ueno, Hidenori Watarai

Author Affiliations +

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461619
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The infrared camera(IRC) onboard ASTRO-F is designed for wide-field imaging and spectroscopic observations at near- and mid-infrared wavelengths. The IRC consists of three channels; NIR, MIR-S and MIR-L, each of which covers wavelengths of 2-5, 5-12 and 12-26 micron, respectively. All channels adopt compact refractive optical designs. Large format array detectors (InSb 512x412 and Si:As IBC 256x256) are employed. Each channel has 10x10 arcmin wide FOV with diffraction-limited angular resolution of the 67cm telescope of ASTRO-F at wavelengths over 5 micron. A 6-position filter wheel is placed at the aperture stop in each channel, and has three band-pass filters, two grisms/prisms and a mask for dark current measurements. The 5 sigma sensitivity of one pointed observation is estimated to be 2, 11 and 62 micro-Jy at 4, 9, 20 micron bands, respectively. Because ASTRO-F is a low-earth orbiting satellite, the observing duration of each pointing is limited to 500 seconds. In addition to pointed observations, we plan to perform mid-infrared scanning observation. Fabrications of the flight-model of NIR, MIR-S, and the warm electronics have been mostly completed, while that of MIR-L is underway. The performance evaluation of the IRC in the first end-to-end test (including the satellite system) is presented.

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Takehiko Wada, Naofumi Fujishiro, Daisuke Ishihara, Hirokazu Kataza, Woojung Kim, Hideo Matsuhara, Toshio Matsumoto, Hiroshi Murakami, Takashi Onaka, Norihide Takeyama, Kazunori Uemizu, Munetaka Ueno, and Hidenori Watarai "Infrared Camera (IRC) onboard ASTRO-F", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461619

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