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8 September 2005 Development of a four-stage x-ray telescope for DIOS mission
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The DIOS, Diffuse Intergalactic Oxygen Surveyor mission, is planned to observe diffuse soft X-rays, which might originate from warm-hot intergalactic medium as a target of missing baryon and as a probe of dark matter. To observe very weak diffuse soft X-rays, the FXT, four-stage X- ray telescope, is specially designed to have wide field of view and large effective area for the small satellite DIOS. It is confirmed that FXT meets basic requirements of the DIOS mission based on the ray tracing analysis. Al-foil based epoxy replication method is applied to the fabrication of element mirror of the FXT. Several tens of foil mirrors were fabricated and measured their performance. Mirror material combination was also reviewed from the view point of line observation other than oxygen.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuzuru Tawara, Machiko Sakashita, Akihiro Furuzawa, Yasushi Ogasaka, Ryo Shibata, Keisuke Tamura, Takuya Miyazawa, Rika Takahashi, Kenta Shimoda, and Chiaki Sakai "Development of a four-stage x-ray telescope for DIOS mission", Proc. SPIE 5900, Optics for EUV, X-Ray, and Gamma-Ray Astronomy II, 59000J (8 September 2005);


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