DRAO 22 MHz radio continuum

This 22 MHz radio continuum covers ~73% of the sky between declination -28° and +80°, derived from observations with the radiotelescope at the Dominion Radio Astrophyical Observatory (DRAO), at a resolution of 1.1°x1.7°secant(zenith angle). Units of the map are KTB.

Reference: http://adsabs.harvard.edu/abs/1999A%26AS..137....7R

Data in the WCS format can be downloaded here: http://www3.mpifr-bonn.mpg.de/survey.html