IRTS Data Atlas
You can get a close-up map of a region by clicking on any area in red, yellow or cyan on the above image, or by typing a coordinate below.
The Infrared Telescope in Space (IRTS) is a cryogenically cooled, small infrared telescope that flew from March - April in 1995. It surveyed approximately 10% of the sky with a relatively wide beam during its 20 day mission. An overview of IRTS, as well as more detailed information is provided by the Institute of Space and Astronautical Science (ISAS), and the Infrared Astronomical Databese of IRTS (DARTS), in Sagamihara, Japan.
Four focal-plane instruments, the Near-Infrared Spectrometer (NIRS), the Mid-Infrared Spectrometer (MIRS), the Far-Infrared Line Mapper (FILM), and the Far-Infrared Photometer (FIRP) made simultaneous observations of the sky at wavelengths ranging from 1 to 1000 um. Instrument summary information can be found here.
The IRTS data coverage is represented as color overlays (footprints) in the all-sky image above, to indicate where IRTS made its observations. This all-sky image is made from the IRAS Sky Survey Atlas (ISSA) data; the footprints (positions) of IRTS image fits files using the FILM and FIRP instruments are indicated as red rectagles; point source positions from NIRS are shown as yellow dots, and positions of sources with spectral information from MIRS are shown as cyan dots. There are 1067 fits images from FILM and FIRP, they are approximately 8 X 8 degrees, and lie along the strip indicated in the red pattern on the all-sky map. The 14294 point sources and 536 spectral sources fall on a narrower strip of ~4 degrees, within the same regions of the sky as the image data.
Also available are IRTS image "cutouts" using IRSA's Cutouts Service, which is a general tool to create single or multiple small FITS (and JPEGs) image cutouts of datasets archived at IRSA.
The canonical paper for IRTS is Murakami et al. (1994).
Click here for more information and instructions on using Atlas Instructions
Also available is a Program Interface to Atlas.
Target Selection Single Object
(Name or Coords)
Table Upload
(Multi Object) Instructions
Size (deg):
[maximum 12.5]
Images must cover coordinate
Source Search Radius:
[maximum 6.25 deg]
Match with image search size
Coordinate Examples:
  • 290.971773 11.774474 eq
  • 19h23m53.23s +11d46m28.1s Equ J2000
  • 47.09669 -1.71325 ga
  • M 16
Default: Equatorial J2000