A new meridian imaging spectrogarph for the auroral spectroscopy

• Taguchi Makoto

  National Institute of Polar Research

• Okano Shoichi

  Planetary Plasma and Atmospheric Research Center, Tohoku University

• Sakanoi Takeshi

  Planetary Plasma and Atmospheric Research Center, Tohoku University

• Koizumi Naoko

  Planetary Plasma and Atmospheric Research Center, Tohoku University

• Aso Takehiko

  National Institute of Polar Research

• Ejiri Masaki

  National Institute of Polar Research

抄録

Spectroscopic and monochromatic imaging observations of emissions in the upper atmosphere are mutually complementary. A meridian imaging auroral spectrograph (ASG) that can measure a spectrum in the visible region along a meridian has been developed for research on the auroral physics and the polar upper-atmosphere dynamics. Combination of a fast optical system inherited from a monochromatic all-sky imager, a grism as a dispersive element, and a cooled CCD camera has enabled a wide field-of-view of 180° along a meridian, spectral coverage of 420-730 nm, spectral resolution of 1.5-2.0 nm, and high sensitivity to be obtained. The absolute sensitivity over a full-image field was calibrated using a National Institute of Standards and Technology (NIST) traceable integrating sphere and determined to be 0.06 cts/s/R at a wavelength of 560 nm at the zenith. The ASG was installed at Longyearbyen in March 2000, and routine operation was started in the 2000/2001 winter season. An example of an auroral spectral image is presented in this report to demonstrate the performance of the ASG.

収録刊行物

• Advances in polar upper atmosphere research

  Advances in polar upper atmosphere research 16 99-110, 2002-09

  国立極地研究所

詳細情報

• CRID: 1570572701852974208
• NII論文ID: 110000037474
• NII書誌ID: AA11397422
• ISSN: 13451065
• 本文言語コード: en
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