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19 November 1998 X-ray calibration of telescopes on board the ASTRO-E satellite
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Abstract
We present the first results of pre-flight calibrations of the x-ray telescopes on board ASTRO-E satellite. They adopt a thin foil-nesting Wolter Type-I optics, which is in principle the same as ASCA XRTs. Owing to a scale up of the telescope and a new technique of the reflector production, however, both the effective area and the imaging capability are improved. In the current measurements, the effective area is obtained to be 460, 313 and 250 cm2 per XRT at 1.49, 4.51, and 8.04 keV, respectively, which is significantly larger than that of ASCA by a factor of 1.5 and 2.5 at 1.49 keV and 8.04 keV. The point spread function also shows a better focusing capability than ASCA by a factor of 2, and the half power diameter is obtained to be 1.84 arcmin at 4.51 keV. The brightness of the stray light is obtained to be 2 X 10-5 counts s-1 mm-2 at the brightest part of the stray light image, in the case that the x-ray star with the on-axis intensity of 1 count s-1 is the source of the stray lights, which is almost the same with ASCA.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ryo Shibata, Manabu Ishida, Hirohiko Honda, Takao Endo, Jun'ichi Ishida, Hideyo Kunieda, Yuzuru Tawara, Akihiro Furuzawa, Yasushi Ogasaka, Manabu Watanabe, K. Misakai, Tetsuo Yoshioka, Peter J. Serlemitsos, Yang Soong, Kai-Wing Chan, Yuichi Terashima, and Satoshi Akao "X-ray calibration of telescopes on board the ASTRO-E satellite", Proc. SPIE 3444, X-Ray Optics, Instruments, and Missions, (19 November 1998); doi: 10.1117/12.331282; https://doi.org/10.1117/12.331282
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