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29 July 2010 The development of DIOS FXT (Four-stage X-ray Telescope)
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);


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