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