VTSS -- Virginia Tech Spectral-Line Survey
SHASSA -- Southern H-Alpha Sky Survey Atlas
Composite -- Finkbeiner (2003)
Bit Mask
Bit Name Comments
--- --------- -------------------------------------------------------
0 'WHAM' WHAM data used (Wisconsin)
1 'VTSS' Virginia Tech Spectral line Survey
2 'SHASSA' Southern Halpha Sky Survey Atlas
3 'STAR' Star removed
4 'SATUR' Saturated pixel nearby in continuum exposure
5 'BRT_OBJ' Bright star/galaxy - measurements unreliable
6 'BIG_OBJ' Position near LMC, SMC, or M31; no sources removed
7 'HI_VEL' High Velocity in WHAM data