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The Infrared Telescope in Space (IRTS) is the first Japanese orbiting telescope dedicated to infrared astronomy observations.

The IRTS is a cryogenically cooled infrared telescope that flied aboard a multi-purpose space platform SFU (Space Flyer Unit). It was launched by a Japanese new rocket HII on March 18, 1995. It surveyed approximately 7 % of the sky with a relatively wide beam during its 28-day mission. Four focal plane instruments made simultaneous observations of the sky at wavelengths from 1 to 1000 micron.

The IRTS will add significant information on cosmology, interstellar matter, late type stars and interplanetary dust.

IRTS data archive are open for public on the ISAS's space data archive system, DARTS. Currently the NIRS and MIRS point source catalogues and the far-infrared image maps by the FILM and FIRP are included.


Infrared Astrophysics Group at ISAS
admin @ ir.isas.jaxa.jp