ABOUT LAMBDA

FITS Header

Primary Header

SIMPLE  =                    T / conforms to FITS standard
BITPIX  =                    8 / array data type
NAXIS   =                    0 / number of array dimensions
EXTEND  =                    T
URL     = 'http://faun.rc.fas.harvard.edu/eschlafly/2dmap'
REFERENC= 'Schlafly, Green, Finkbeiner, Rix, et al. 2014, ApJ'
PIXTYPE = 'HEALPIX '
ORDERING= 'RING    '
NSIDE   =                  512
NPIX    =              3145728
FIRSTPIX=                    0
LASTPIX =              3145727
VERSION =                  1.0
DISTANCE=                 4.54 / Distance to which E(B-V) is measured, kpc
COMMENT Reddening Maps to 4.5 kpc from PS1 Data
COMMENT NOTE: reddenings in the PS1 bands are the most direct observable.
COMMENT These are transformed to E(B-V)_SFD via Schlafly & Finkbeiner (2011).
COMMENT The resulting map is expected to have the same overestimation of E(B-V)
COMMENT by 14% that the Schlegel, Finkbeiner, and Davis (1998) map has, and
COMMENT should be transformed for use in other bands with the same coefficients
COMMENT given in Schlafly & Finkbeiner (2011).
END

Extension Header 1

XTENSION= 'BINTABLE'           / binary table extension
BITPIX  =                    8 / array data type
NAXIS   =                    2 / number of array dimensions
NAXIS1  =                   28 / length of dimension 1
NAXIS2  =              3145728 / length of dimension 2
PCOUNT  =                    0 / number of group parameters
GCOUNT  =                    1 / number of groups
TFIELDS =                    7 / number of table fields
TTYPE1  = 'status  '
TFORM1  = 'J       '
TTYPE2  = 'nstar   '
TFORM2  = 'J       '
TTYPE3  = 'err     '
TFORM3  = 'E       '
TTYPE4  = 'err2    '
TFORM4  = 'E       '
TTYPE5  = 'ebv     '
TFORM5  = 'E       '
TTYPE6  = 'nstar_tot'
TFORM6  = 'J       '
TTYPE7  = 'nside   '
TFORM7  = 'J       '
END

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason