HI Parkes All-
This free-free emission map has been obtained using radio recombination lines
at 1.4
GHz along the Galactic plane, for 20° < l < 40°
and |b| < 4°
.
At the resolution of 14.8
', the map has been derived from H Parkes All-Sky Survey (HIPASS)
and associated Zone of Avoidance (ZOA) survey (see http://adsabs.harvard.edu/abs/2012MNRAS.422.2429A).
Units of the map are Kelvin
(brightness temperature).