The Infrared Telescope in Space (IRTS)

The IRTS is the first Japanese orbiting mission for infrared astronomy. The IRTS was equipped with a 15-cm cooled telescope and four scientific instruments :

  1. the Near-InfraRed Spectrometer (NIRS; 1.4-4.0 µm)
  2. the Mid-InfraRed Spectrometer (MIRS; 4.5-11.7 µm)
  3. the Far-Infrared Line Mapper (FILM; 145, 155, 158, 160 µm)
  4. the Far-InfraRed Photometer (FIRP; 150, 250, 400, 700 µm)

The angular resolution of the FIRP images is 0.5 deg and units are W/m2/sr/Hz.

For more informations of the IRTS mission, please visit: http://www.ir.isas.ac.jp/irts/irts_E.html

Original data in the WCS format can be downloaded here: http://darts.isas.jaxa.jp/ir/irts/maps/firp_map_data/

Maps

250 microns : IRTS_250_1_512.fits

400 microns : IRTS_400_1_512.fits

700 microns : IRTS_700_1_512.fits

IRTS 250 IRTS 400 IRTS 700