Development of the multi-spectral auroral camera onboard the INDEX satellite

T. Sakanoi, Shouichi Okano, Y. Obuchi, T. Kobayashi, M. Ejiri, K. Asamura, M. Hirahara

研究成果: Article査読

34 被引用数 (Scopus)

抄録

To investigate the fine-scale auroral structures, high time and spatial resolution imaging observations of optical auroras will be made by a multi-spectral auroral camera (MAC) onboard the INDEX satellite which will be launched by an H2A rocket as a piggyback satellite into a polar orbit at an altitude of ∼700 km. Monochromatic auroral image data at emissions of N 2 + first negative band (427.8 nm), OI (557.7 nm), and N 2 first positive band (670 nm are obtained by MAC with the field-of-view (FOV) of 7.6° using three independent CCD cameras in combination with interference filters. MAC will operate in the nightside auroral region by two operation modes in the following. (1) Simultaneous measurement with particle sensors (ESA/ISA). In this mode, MAC observes an imaging area of ∼80×80 km (at a 100 km altitude) around a magnetic footprint with spatial and time resolutions of ∼1.2 km and 120 msec, respectively. (2) Auroral height distribution measurement. The attitude of INDEX satellite is changed to direct the FOV of MAC on the limb of the Earth. In this mode, MAC observes an imaging area of ∼270×270 km (at a 2000 km distance from the satellite) with spatial and time resolutions of ∼4 km and 1 sec, respectively. In this paper, the science mission, the instrumentation, and observation modes concerning on MAC will be presented.

本文言語English
ページ(範囲)379-384
ページ数6
ジャーナルAdvances in Space Research
32
3
DOI
出版ステータスPublished - 2003 1月 1

ASJC Scopus subject areas

  • 航空宇宙工学
  • 天文学と天体物理学
  • 地球物理学
  • 大気科学
  • 宇宙惑星科学
  • 地球惑星科学(全般)

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