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IRTS (Infrared Telescope in Space)


IRTS (Infrared Telescope in Space)
A highly-successful 15-cm-diameter orbiting infrared telescope developed by Japan's ISAS (Institute of Space and Astronautical Science), launched aboard Japan's SFU (Space Flyer Unit), and retrieved by the Space Shuttle Endeavour on mission STS-72 in December 1995. Attached to the telescope were four instruments: a near-infrared spectrometer (NIRS), a mid-infrared spectrometer (MIRS), a far-infrared line mapper (FILM), and a far-infrared photometer (FIRP). MIRS and FIRP were built in collaboration with American researchers. IRTS operated from Mar. 30, 1995, to Apr. 26, 1995, when its supply of cryogenic coolant ran out.


launch date Mar. 18, 1995
launch vehicle H-2
launch site Tanegashima
orbit 467 × 496 km × 29°


Related entries

   • infrared astronomy
   • infrared astronomy satellites


Related categories

   • JAPANESE SATELLITES AND SPACE PROBES
   • SATELLITES AND SPACE PROBES


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