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Proceedings Paper

Ground-based X-ray calibration of the telescopes onboard Astro-E2 satellite
Author(s): Kazutami Misaki; Hideyo Kunieda; Yoshitomo Maeda; Yoshito Haba; Kei Itoh; Hideyuki Mori; Ryo Iizuka; Akiharu Itoh; Hirohiko Inoue; Shunsaku Okada; Yuushi Yokoyama; Yasushi Ogasaka; Keisuke Tamura; Akihiro Furuzawa; Ryo Shibata; Takeshi Tanaka; Masataka Naitou; Manabu Ishida; Akira Hayakawa; Chiaki Inoue; Atsushi Hayashi; Tomohiro Shimizu; Peter J. Serlemitsos; Yang Soong; Kai-Wing Chan; Takashi Okajima; John Philip Lehan
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Paper Abstract

Astro-E2, to be launched in early 2005, will carry five X-ray Telescopes (XRT). The design of the XRT is the same as the previous original mission Astro-E, that is a conical approximation of Wolter Type-I optics, where about 170 thin-foil reflectors are nested confocally. Some modifications from Astro-E are adopted within the severe constraints due to the policy of "re-build" instruments. One of the major changes is the addition of pre-collimators for the stray light protection. Several modifications on the fabrication processes are also made. The replication glass mandrels are screened carefully, which is expected to reduce the figure error of replicated reflectors. We thus expect better performance than Astro-E especially in imaging capability. In order to qualify the performance of the Astro-E2 XRT, we have started ground calibration program of XRT at 30 meter X-ray beam facility of the Institute of Space and Astronautical Science (ISAS). We have found positive improvements on the telescope performance from the Astro-E, which probably arise from the applied modifications. The on-axis half-power diameter (HPD) has been evaluated to be 1.6-1.7 arcmin, which is improved from the Astro-E (2.0 ~ 2.1 arcmin HPD). The on-axis effective areas of quadrants are larger than the average of Astro-E by about 5%. The on-axis effective areas of the XRT for X-ray Imaging Spectrometers (XIS) are approximately 460, 340, 260, and 190 cm2 at energies of 1.49, 4.51, 8.04, and 9.44 keV, respectively. The present paper describes the recent results of the performance of the first flight assembly of the Astro-E2 XRT.

Paper Details

Date Published: 29 January 2004
PDF: 12 pages
Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, (29 January 2004); doi: 10.1117/12.505773
Show Author Affiliations
Kazutami Misaki, Institute of Space and Astronautical Science (Japan)
Hideyo Kunieda, Institute of Space and Astronautical Science (Japan)
Yoshitomo Maeda, Institute of Space and Astronautical Science (Japan)
Yoshito Haba, Institute of Space and Astronautical Science (Japan)
Kei Itoh, Institute of Space and Astronautical Science (Japan)
Hideyuki Mori, Institute of Space and Astronautical Science (Japan)
Ryo Iizuka, Institute of Space and Astronautical Science (Japan)
Akiharu Itoh, Institute of Space and Astronautical Science (Japan)
Hirohiko Inoue, Institute of Space and Astronautical Science (Japan)
Shunsaku Okada, Institute of Space and Astronautical Science (Japan)
Yuushi Yokoyama, Institute of Space and Astronautical Science (Japan)
Yasushi Ogasaka, Nagoya Univ. (Japan)
Keisuke Tamura, Nagoya Univ. (Japan)
Akihiro Furuzawa, Nagoya Univ. (Japan)
Ryo Shibata, Nagoya Univ. (Japan)
Takeshi Tanaka, Nagoya Univ. (Japan)
Masataka Naitou, Nagoya Univ. (Japan)
Manabu Ishida, Tokyo Metropolitan Univ. (Japan)
Akira Hayakawa, Tokyo Metropolitan Univ. (Japan)
Chiaki Inoue, Tokyo Metropolitan Univ. (Japan)
Atsushi Hayashi, Tokyo Metropolitan Univ. (Japan)
Tomohiro Shimizu, Tokyo Metropolitan Univ. (Japan)
Peter J. Serlemitsos, NASA Goddard Space Flight Ctr. (United States)
Yang Soong, NASA Goddard Space Flight Ctr. (United States)
Kai-Wing Chan, NASA Goddard Space Flight Ctr. (United States)
Takashi Okajima, NASA Goddard Space Flight Ctr. (United States)
John Philip Lehan, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 5168:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy
Oberto Citterio; Stephen L. O'Dell, Editor(s)

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