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Parkes Galactic All Sky Survey (GASS)
This map corresponds to the 21-cm
emission from Galactic neutral Hydrogen
for the entire sky south of δ = +1°
using the thirteen beam 20 cm
multibeam receiver on the Parkes Radio Telescope.
GASS covers all Milky Way velocities between LSR -400 km/s
and 500 km/s
.
The resolution of the map is 16
' and the units are cm-2
.
Reference
'Gass: The Parkes Galactic All-Sky Survey. I. Survey Description, Goals, and Initial Data Release' by McClure-Griffiths et al, 2009, ApJS, 181, 398 http://adsabs.harvard.edu/abs/2009ApJS..181..398M