Performance of an imaging fourier transform spectrometer with photoconductive detector arrays: An application for the AKARI far-infrared instrument

Mitsunobu Kawada, Hidenori Takahashi, Noriko Murakami, Hiroshi Matsuo, Yoko Okada, Akiko Yasuda, Shuji Matsuura, Mai Shirahata, Yasuo Doi, Hidehiro Kaneda, Takafumi Ootsubo, Takao Nakagawa, Hiroshi Shibai

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We have developed an imaging Fourier transform spectrometer (FTS) for space-based far-infrared astronomical observations. The FTS employs newly developed photoconductive detector arrays with a capacitive trans-impedance amplifier, which makes the FTS a completely unique instrument. The FTS was installed as a function of the far-infrared instrument (FIS: Far-Infrared Surveyor) aboard the Japanese astronomical satellite, AKARI, which was launched on 2006 February 21 (UT) from Uchinoura Space Center. The FIS-FTS had been operated for more than one year before liquid helium ran out on 2007 August 26. The FIS-FTS was operated nearly six hundreds times, which corresponds to more than one hundred hours of astronomical observations and almost the same amount of time for calibrations. As expected from laboratory measurements, the FIS-FTS performed well and has produced a large set of astronomical data for valuable objects. Meanwhile, it has become clear that the detector transient effect is a considerable factor for FTSs with photoconductive detectors. In this paper, the instrumentation of the FIS-FTS and interesting phenomena related to FTS using photoconductive detectors are described, and future applications of this kind of FTS system are discussed.

Original languageEnglish
Pages (from-to)S389-S397
JournalPublications of the Astronomical Society of Japan
Volume60
Issue numberSPECIAL ISUE
DOIs
Publication statusPublished - 2008
Externally publishedYes

Keywords

  • Instrumentation: Spectrographs
  • Space vehicles: Instruments
  • Techniques: Spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Kawada, M., Takahashi, H., Murakami, N., Matsuo, H., Okada, Y., Yasuda, A., Matsuura, S., Shirahata, M., Doi, Y., Kaneda, H., Ootsubo, T., Nakagawa, T., & Shibai, H. (2008). Performance of an imaging fourier transform spectrometer with photoconductive detector arrays: An application for the AKARI far-infrared instrument. Publications of the Astronomical Society of Japan, 60(SPECIAL ISUE), S389-S397. https://doi.org/10.1093/pasj/60.sp2.s389