IRAS

IRAS Data Online

Point Sources and Small Extended Sources Sky Maps and Related Files Images of Smaller Fields
 Point-Source Derivatives FTP Access to Related CDS Catalogs Solar System
 
Point Sources and Small Extended Sources
Product Description No. of Files MB/file Format Download
Point Source Catalog
This is a catalog of 245,889 well-confirmed point sources, i.e., sources with angular extents less than approximately 0.5', 0.5', 1.0', and 2.0' in the in-scan direction at 12, 25, 60, and 100 microns, respectively. More... 1 39 mb ASCII DATA
Point Source Reject Catalog
This is a catalog of 372,774 potential infrared point sources that failed one or more of the confirmation and confusion criteria and were not, thus, included in the Point Source Catalog. More... 1 56 mb ASCII DATA
High Source Density Bins

Regions with more sources per sq. deg than the confusion limit in a given band were processed according to more stringent rules than usual before inclusion in the Point Source Catalog. More...

1 247 kb ASCII DATA
Working Survey Database and Ancillary Files
The WSDB and its Ancillary Files give a detailed description of the observational and data processing history of each IRAS point source. More... 20 0.5-8 mb BIN DATA
Low-Resolution Spectrometer Catalog
The LRS catalog consists of the spectra extracted for 5425 bright sources in the IRAS Point Source Catalog. More... 1 5 mb ASCII DATA
Faint Source Catalog
The Faint Source Survey (FSS) is the definitive IRAS data set for faint point sources. More... 1 41 mb FITS DATA
Faint Source Reject Catalog
The Faint Source Reject Catalog contains 593,516 sources rejected for inclusion in the Faint Source Catalog because they failed to meet one or more of the criteria established to ensure the reliability of the FSC. More... 24 1-56 mb FITS  DATA

Serendipitous Survey Catalog

The SSC is a catalog of 12, 25, 60 and 100 micron photometric observations of 43,866 point-like sources detected fortuitiously in the IRAS Pointed Observation program. More... 1 8 mb ASCII DATA
Small-Scale Structure Catalog
The Small-Scale Structure (SSS) Catalog, also known as the catalog of "small extended sources," contains sources resolved by the IRAS in any band (12, 25, 60, or 100 microns) but smaller than 8' in angular extent. More... 2 4 mb ASCII DATA

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Sky Maps and Related Files
Product Description No. of Files MB/file Format Download
IRAS Sky Survey Atlas and Reject Fields
The IRAS Sky Survey Atlas and Reject Fields are images of the sky as measured by IRAS at spatial scales larger than about 5'. More... ~6600 0.5 mb FITS DATA
ISSA Galactic Plane Mosaics
For convenience in studying Galactic phenomena, the ISSA and Reject Fields plates were mosaicked and transformed at IPAC to Galactic coordinates in a gnomonic (tangent plane) projection. More... 32 6 mb FITS DATA
Sky Flux Plates

This data product is a high-resolution presentation of the IRAS hours-confirmed (HCON) sky surveys in image form. More...

~4800 0.5 -1 mb FITS DATA
Galactic Plane Maps
For convenience in studying Galactic phenomena, the sky survey data (three sky coverages) within 10° of the Galactic plane were reprojected from the 16.5° x 16.5° Sky Flux Plates into Galactic coordinates. More... ~290 1 mb FITS DATA
Faint Source Survey Plates
The Faint Source Survey (FSS) is the definitive IRAS data set for faint point sources. More... ~20520 0.6-10 mb FITS DATA
Low-Resolution All-Sky Maps
These images were produced by dividing the 0.5° x 0.5° beam data contained in the standard Zodiacal Observation History File into the three separate sky coverages (HCONs) and assembling them into three maps with an Aitoff equal area projection in Galactic coordinates. More... 24 0.8 mb FITS DATA
Zodiacal Observation History Files
These data products are time-ordered versions of the entire IRAS sky survey and were created to aid modeling and extracting the zodiacal emission intensity in the various extended source data products. More... 7 200 mb TAR DATA

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Images of Smaller Fields
Product Description No. of Files MB/file Format Download
Pointed Observations
During the 10-month lifetime of IRAS, roughly 40% of the observing time was devoted to pointed observations, also commonly called Additional Observations (AOs). The released POs total 7326. More... ~110890 10-150kb FITS DATA
Large Optical Galaxies
The "Large Galaxy Catalog" contains IRAS observations of 85 galaxies listed in RC2 with apparent blue light isophotal diameters (D_25) greater than 8'. More... ~670 14-526 kb FITS DATA
High-Resolution Galaxies

The Atlas of High-Resolution Maps of Nearby Galaxies (Rice 1993) contains maps of approximately 1' resolution of the 30 most extended galaxies in the Large Optical Galaxy Catalog. More...

~960 120-470 kb FITS   DATA
Chopped Photometric Channel Survey
The CPC instrument on IRAS was used to make maps at 50 and 100 microns by scanning its 1.2' diameter field of view in raster fashion. Typical maps are 40 x 40 pixels on a 20" grid. More... ~3010 11-14 kb FTIS DATA

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Point-Source Derivatives
Product Description No. of Files MB/file Format Download
Cataloged Galaxies and Quasars
The catalog of galaxies and quasars observed by IRAS (the "Extragalactic Catalog") is a compilation of IRAS Point Source Catalog data for objects appearing in the most widely-used extragalactic catalogs. More... 2 2 mb FITS DATA
1.2-Jy IRAS Redshift Survey
This catalog contains redshifts of sources selected from the Point Source Catalog. The sample is flux limited to 1.2 Jy at 60 microns, and a color criterion, f_60 > sqrt(f_12 * f_25), where f_w is the flux density at wavelength w, was used to select galaxies over stars and other sources within the Milky Way. More... 1 1 mb ASCII DATA

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Solar System
Product Description No. of Files MB/file Format Download
Asteroid and Comet Survey
The IRAS Asteroid and Comet Survey is the largest, most uniform and least biased survey ever conducted of asteroids and comets. More... 7

100 kb-55 mb

ASCII  DATA
Minor Planet Survey Database
The Minor Planet Survey supplements the asteroid data given in the Asteroid and Comet Survey. More... 13 11 kb -2 mb ASCII  DATA

FTP Access to Related CDS Catalogs

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. David T. Chuss
NASA Official: Dr. David T. Chuss
Web Curator: Mr. Michael R. Greason