The development of DIOS FXT (Four-stage X-ray Telescope)

Yuzuru Tawara; Yuki Kurebayashi; Satoshi Sugita; Ikuya Sakurai; Tadashi Masuda; Tatsuharu Torii; Kohji Matsushita

doi:10.1117/12.856765

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29 July 2010 The development of DIOS FXT (Four-stage X-ray Telescope)

Yuzuru Tawara, Yuki Kurebayashi, Satoshi Sugita, Ikuya Sakurai, Tadashi Masuda, Tatsuharu Torii, Kohji Matsushita

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Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 77324A (2010) https://doi.org/10.1117/12.856765
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

A small satellite mission DIOS (Diffuse Intergalactic Oxygen Surveyor ) is planned to observe the warm-hot intergalactic medium ( WHIM ) of a few millions of degree, by mapping the redshifted emission lines of oxygen. FXT( Four Stage X-ray Telescope) has been developed as the best fit optics for DIOS. The X-ray measurement of the first demonstration model showed a few time larger angular resolution than designed value and compact optical measurement systems for each stage single mirror were made to clarify the reason of worse performance. We will report on the present status of the development of FXT including compact optical measurement system and reexamination of the process of replica foil mirror fabrication.

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Yuzuru Tawara, Yuki Kurebayashi, Satoshi Sugita, Ikuya Sakurai, Tadashi Masuda, Tatsuharu Torii, and Kohji Matsushita "The development of DIOS FXT (Four-stage X-ray Telescope)", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77324A (29 July 2010); https://doi.org/10.1117/12.856765

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