The demonstration model of four-stage X-ray telescope for DIOS mission

Y. Tawara, I. Sakurai, A. Furuzawa, Y. Ogasaka, K. Tamura, R. Shibata, T. Miyazawa, Y. Fukaya, T. Masuda, T. Torii, M. Sakashita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


To search for warm-hot intergalactic medium (WHIM), a small satellite mission DIOS (Diffuse Intergalactic Oxygen Surveyer) is planned and a specially designed four-stage X-ray telescope (FXT) has been developed as the best fit optics to have a wide field of view and a large effective area. Based on the previous works such as the design of optics and replica foil mirror fabrication, we made the demonstration model of the FXT, which has a set of four-stage mirror supported by alignment plates to reduce alignment errors between different stages. On the selection of mirror surface metrial, we tried to increase the reflectivity of gold or platinum replica mirror at low energies. We are also trying to make Ni replica mandrel having the shape of four different cone angles for developing a full or partial shell of four-stage mirror formed in a same substrate. We describe the expected performance and alignment procedure of the demonstration model, the present status of the selection of mirror surface material and the development of Ni mandrel.

Original languageEnglish
Title of host publicationSpace Telescopes and Instrumentation II
Subtitle of host publicationUltraviolet to Gamma Ray
Publication statusPublished - 02-10-2006
Externally publishedYes
EventSpace Telescopes and Instrumentation II: Ultraviolet to Gamma Ray - Orlando, FL, United States
Duration: 24-05-200631-05-2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6266 I
ISSN (Print)0277-786X


OtherSpace Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Country/TerritoryUnited States
CityOrlando, FL

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 'The demonstration model of four-stage X-ray telescope for DIOS mission'. Together they form a unique fingerprint.

Cite this