Development of a four-stage X-ray telescope for DIOS mission

Yuzuru Tawara, Machiko Sakashita, Akihiro Furuzawa, Yasushi Ogasaka, Ryo Shibata, Keisuke Tamura, Takuya Miyazawa, Rika Takahashi, Kenta Shimoda, Chiaki Sakai

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


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 BIOS. It is confirmed that FXT meets basic requirements of the BIOS 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.

Original languageEnglish
Article number59000J
Pages (from-to)1-5
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 01-12-2005
Externally publishedYes
EventOptics for EUV, X-Ray, and Gamma-Ray Astronomy II - San Diego, CA, United States
Duration: 03-08-200504-08-2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Development of a four-stage X-ray telescope for DIOS mission'. Together they form a unique fingerprint.

Cite this