FITS is the standard astronomical data format that stores the image, metadata, and data tables for easy transport and can be manipulated. See http://fits.gsfc.nasa.gov/ for more information and software downloads.
The FITS header for this image file is included as a separate text file.
Brown, Shea; Duesterhoeft, Jon; Rudnick, Lawrence.
Cluster 0217+70 Lband: point source subtracted.
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