Share Email Print
cover

Proceedings Paper

The filter wheel system for the x-ray spectrometer onboard Astro-E2
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

X-Ray Spectrometer (XRS) is the microcalorimeter onboard the X-ray astronomy satellite Astro-E2 which is scheduled to be launched early in 2005. For the XRS to achieve its best energy resolution of 6 eV at 6 keV, X-ray intensity should be limited up to several c s-1 pixel-1. The filter wheel (FW) is the instrument to reduce incident X-ray intensity on the XRS using extinction filters. The FW consists of a stepping motor, extinction filters, and a filter disk which has six mounting positions for the extinction filters. Among the six mounting points, two are used for Neutral Density (ND) filters, another two are for Beryllium (Be) filters, and the other two are remained open. The biggest modification from Astro-E is that we attach radioisotopes of 55Fe and 41Ca on the filter disk, which illuminate the XRS pixels to monitor the gain in orbit. We present here the mechanical design of the FW especially on improvements from Astro-E, and the results of our calibration measurements on X-ray transmission of the extinction filters.

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: 10.1117/12.509834
Show Author Affiliations
Akira Hayakawa, Tokyo Metropolitan Univ. (Japan)
Chiaki Inoue, Tokyo Metropolitan Univ. (Japan)
Yoshitaka Ishisaki, Tokyo Metropolitan Univ. (Japan)
Manabu Ishida, Tokyo Metropolitan Univ. (Japan)
Takaya Ohashi, Tokyo Metropolitan Univ. (Japan)
Tae Furusho, Institute of Space and Astronautical Science (Japan)
Noriko Y. Yamasaki, Institute of Space and Astronautical Science (Japan)
Ryuichi Fujimoto, Institute of Space and Astronautical Science (Japan)
Kazuhisa Mitsuda, Institute of Space and Astronautical Science (Japan)
Kazutami Misaki, Institute of Space and Astronautical Science (Japan)
Yoshitomo Maeda, Institute of Space and Astronautical Science (Japan)
Hideyo Kunieda, Institute of Space and Astronautical Science (Japan)


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

© SPIE. Terms of Use
Back to Top