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Proceedings Paper

Revealing a detailed performance of the soft x-ray telescopes of the ASTRO-H mission
Author(s): T. Sato; R. Iizuka; T. Hayashi; Y. Maeda; M. Ishida; K. Tomikawa; N. Kikuchi; T. Okajima; Y. Soong; P. Serlemitsos; H. Mori; T. Izumiya; S. Minami
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Paper Abstract

The international X-ray observatory, ASTRO-H is currently planed as launched in 2015. The ASTRO-H mission covers a wide energy range from a few hundreds eV to 600 keV. The two Soft X-ray Telescopes (SXT- 1 and SXT-2) play a role to image the soft X-ray sky up to ~12 keV in that range. Each of them focuses an image on the focal plane detectors of the CCD camera (SXI) and the calorimeter (SXS-XCS), respectively. In this paper, we present spot scan measurements of the two SXTs. The spot scan fully illuminates the telescope by mapping with the 8 mm by 8 mm beam and creates the ”maps” of the half power diameter (HPD) and the focal location of the focused image. We found variations of performance at local area of the telescope. Each of the spot images has different focal-location and different HPD. Moreover, we found that the map of the HPD is very similar from quadrant to quadrant, but the map of the focal location is different from quadrant to quadrant, from radius to radius, and from azimuthal angle to angle.

Paper Details

Date Published: 24 July 2014
PDF: 9 pages
Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 914459 (24 July 2014); doi: 10.1117/12.2055622
Show Author Affiliations
T. Sato, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Tokyo Metropolitan Univ. (Japan)
R. Iizuka, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
T. Hayashi, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Y. Maeda, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
M. Ishida, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
K. Tomikawa, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Tokyo Metropolitan Univ. (Japan)
N. Kikuchi, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Tokyo Metropolitan Univ. (Japan)
T. Okajima, NASA Goddard Space Flight Ctr. (United States)
Y. Soong, NASA Goddard Space Flight Ctr. (United States)
P. Serlemitsos, NASA Goddard Space Flight Ctr. (United States)
H. Mori, Nagoya Univ. (Japan)
T. Izumiya, Chuo Univ. (Japan)
S. Minami, Nara Women's Univ. (Japan)


Published in SPIE Proceedings Vol. 9144:
Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz, Editor(s)

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