Formation Flight All Sky Telescope (FFAST)

Hiroshi Tsunemi; Ken'ichi Torii; Emi Miyata; Masaharu Nomachi; Hideyo Kunieda; Yasushi Ogasaka; Masayuki Itoh

doi:10.1117/12.616809

8 September 2005 Formation Flight All Sky Telescope (FFAST)

Hiroshi Tsunemi, Ken'ichi Torii, Emi Miyata, Masaharu Nomachi, Hideyo Kunieda, Yasushi Ogasaka, Masayuki Itoh

Proceedings Volume 5900, Optics for EUV, X-Ray, and Gamma-Ray Astronomy II; 59000O (2005) https://doi.org/10.1117/12.616809
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We propose an all-sky-survey at hard X-ray region (up to 80 keV) by using a formation flight of two satellites. They consist of a telescope satellite, carrying a super mirror focusing at hard X-ray region, and a detector satellite, carrying scintillator deposited CCDs (SDCCDs) for hard X-ray region. These two satellites are in the same orbit (altitude is about 500 km) in formation flight. Since the super mirror will be a thin-foil mirror with poor imaging capability. Therefore, they control the separation of 20m±10 cm. Both satellites are in Keplerian orbit, then the viewing direction (from the detector satellite to the telescope satellite) scans along a large circle. Due to the precession of the orbit, the large circle gradually moves in the sky so that we can cover a large fraction of the sky. We can cover a large fraction of the sky without consuming a lot of fuel. However, the unseen regions are left near the ecliptic poles. This project, Formation Flight All Sky Telescope (FFAST), will be the first all sky survey at hard X-ray region.

Citation Download Citation

Hiroshi Tsunemi, Ken'ichi Torii, Emi Miyata, Masaharu Nomachi, Hideyo Kunieda, Yasushi Ogasaka, and Masayuki Itoh "Formation Flight All Sky Telescope (FFAST)", Proc. SPIE 5900, Optics for EUV, X-Ray, and Gamma-Ray Astronomy II, 59000O (8 September 2005); https://doi.org/10.1117/12.616809

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available