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WHAM
The Wisconsin H-alpha Mapper has surveyed the distribution and kinematics of ionized gas in the Northern sky and then in the Southern sky in 2009, at an angular resolution of 1°.
The WCS map can been downloaded here : http://www.astro.wisc.edu/wham-site/wham-sky-survey
References:
- Early Results from the Wisconsin H-Alpha Mapper Southern Sky Survey: http://adsabs.harvard.edu/abs/2010AAS...21541528H
- The Wisconsin Hα Mapper Northern Sky Survey: http://adsabs.harvard.edu/abs/2003ApJS..149..405H