Statistics – Applications
Scientific paper
Jun 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2744...75s&link_type=abstract
Proc. SPIE Vol. 2744, p. 75-83, Infrared Technology and Applications XXII, Bjorn F. Andresen; Marija S. Scholl; Eds.
Statistics
Applications
1
Scientific paper
In this paper we describe the concept and the design of the InfraRed Imaging Surveyor (IRIS), the first Japanese satellite solely dedicated to infrared astronomy. It will follow a successful precursor, the Infrared Telescope in Space (IRTS) onboard the Space Flyer Et (SFU) in 1995. The IRIS has a 70 cm telescope cooled down to 7 K by using superfluid helium assisted by two-state Stirling cycle coolers. The expected hold time of the super-fluid helium is one year. After consumption of the helium, near-infrared observation can be continued by using the mechanical coolers. Two focal plane instruments are planned; the infrared camera (IRC) and the far-infrared surveyor (FIS). The total spectral coverage is 2 to 200 microns. The major scientific objectives are to investigate birth and evolution of galaxies in the early universe by survey of young normal galaxies and starburst galaxies. The orbit is a sun- synchronous orbit, in which the cooled telescope can avoid huge emissions from the Sun and the Earth by pointing the telescope on the great circle perpendicular to the Sun. The IRIS project is expected to start in 1997 and it will be launched by a M-V rocket in 2002.
Murakami Hiroshi
Shibai Hiroshi
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