In-flight performance of the Canadian Astro-H Metrology System

Luigi C. Gallo*, Alexander Koujelev, Stéphane Gagnon, Timothy Elgin, Martin Guibert, Ryo Iizuka, Manabu Ishida, Kosei Ishimura, Naoko Iwata, Taro Kawano, Casey Lambert, Franco Moroso, Shiro Ueno, Takayuki Yuasa


研究成果: Article査読

6 被引用数 (Scopus)


The Canadian Astro-H Metrology System (CAMS) on the Hitomi x-ray satellite is a laser alignment system that measures the lateral displacement (X/Y) of the extensible optical bench (EOB) along the optical axis of the hard x-ray telescopes (HXTs). The CAMS consists of two identical units that together can be used to discern translation and rotation of the deployable element along the axis. This paper presents the results of in-flight usage of the CAMS during deployment of the EOB and during two observations (Crab and G21.5-0.9) with the HXTs. The CAMS was extremely important during the deployment operation by providing real-time positioning information of the EOB with micrometer-scale resolution. We show how the CAMS improves data quality coming from the hard x-ray imagers. Moreover, we demonstrate that a metrology system is even more important as the angular resolution of the telescope increases. Such a metrology system will be an indispensable tool for future high-resolution x-ray imaging missions.

ジャーナルJournal of Astronomical Telescopes, Instruments, and Systems
出版ステータスPublished - 2018 4月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 制御およびシステム工学
  • 器械工学
  • 天文学と天体物理学
  • 機械工学
  • 宇宙惑星科学


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