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Proceedings Paper

The NeXT x-ray telescope system: status update
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Paper Abstract

Japan's NeXT mission has been approved for the Phase-A in 2007. At present NeXT is in the process of transition to the Phase-B. One of the unique feature of the mission is an imaging spectroscopy in unprecedentedly wide energy region from 0.5 to 80 keV. The X-Ray Telescope (XRT) system covers the energy region by means of grazing incidence reflective optics. International collaboration has been formed for the project and design and basic study have been carried out so far. Current baseline specification includes two hard X-ray telescopes which are combined with the Hard X-ray Imager (Si + CdTe pixel or strip) and cover 5 to 80 keV, and two soft X-ray telescopes which cover 0.3 to about 20 keV, one combined with a high resolution X-ray micro-calorimeter and the other with an X-ray CCD. Both of hard and soft X-ray mirrors employ same optical design; tightly-nested, conically-approximated thin-foil Wolter-I optics. The mission requirements for XRT system have been identified as 300 cm2 at 30 keV for the hard X-ray telescope in total and 400 cm2 at 6 keV for the soft X-ray telescope per unit. The requirement on the point spread function is 1.7 arcmin in HPD, as well as the goal being 1.2 arcmin. Based on the current level of technology all the mission requirements are expected to be satisfied.

Paper Details

Date Published: 15 July 2008
PDF: 8 pages
Proc. SPIE 7011, Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray, 70110P (15 July 2008); doi: 10.1117/12.788736
Show Author Affiliations
Yasushi Ogasaka, Nagoya Univ. (Japan)
Hideyo Kunieda, Nagoya Univ. (Japan)
Takuya Miyazawa, Nagoya Univ. (Japan)
Peter Serlemitsos, NASA Goddard Space Flight Ctr. (United States)
Yang Soong, NASA Goddard Space Flight Ctr. (United States)
Takashi Okajima, NASA Goddard Space Flight Ctr. (United States)
Yoshitomo Maeda, The Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Hideyuki Mori, The Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Manabu Ishida, The Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Hisamitsu Awaki, Ehime Univ. (Japan)
Akihiro Furuzawa, Nagoya Univ. (Japan)
Yoshiharu Namba, Chubu Univ. (Japan)
Kentaro Uesugi, Japan Synchrotron Radiation Research Institute (Japan)
Yoshio Suzuki, Japan Synchrotron Radiation Research Institute (Japan)
Yoshito Haba, Nagoya Univ. (Japan)
Keisuke Tamura, The Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Hiroshi Tsunemi, Osaka Univ. (Japan)
Koujun Yamashita, Nagoya Univ. (Japan)
Masayuki Itoh, Kobe Univ. (Japan)


Published in SPIE Proceedings Vol. 7011:
Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray
Martin J. L. Turner; Kathryn A. Flanagan, Editor(s)

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