FITS Headers

spt_tf_ra5h30dec-55_2008_220ghz_zea_779_1559_dr1.fits

Primary Header

SIMPLE  =                    T / Written by IDL:  Wed Nov 23 12:39:58 2011      
BITPIX  =                  -32 / Number of bits per data pixel                  
NAXIS   =                    2 / Number of data axes                            
NAXIS1  =                 3120 /                                                
NAXIS2  =                 3120 /                                                
DATE    = '2011-11-23'         / Creation UTC (CCCC-MM-DD) date of FITS header  
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy  
COMMENT and Astrophysics', volume 376, page 359; bibcode 2001A&A...376..359H    
COMMENT This file contains a Fourier-domain filter transfer function for the    
COMMENT associated SPT-SZ temperature map for the 220 GHz frequency             
COMMENT band and the ra5h30dec-55 field observed during the 2008 season.  The   
COMMENT transfer function was estimated by simulating and filtering observations
COMMENT of a map with a 0.75 arcmin FWHM Gaussian kernel centered at the        
COMMENT location specified by the X_CEN/Y_CEN and RA_CEN/DEC_CEN keywords.      
COMMENT Pixel numbers assume a zero-indexed array.  The transfer function is for
COMMENT a subregion of the map covering approximately one-ninth of the map area.
COMMENT To avoid numerical artifacts, regions of the Fourier plane for which the
COMMENT Gaussian kernel amplitude was less than 1% were set to zero.  The       
COMMENT Fourier-domain grid in each dimension corresponds to 0, 2pi/(NT),       
COMMENT 2*2pi/(NT), ..., (N/2-1)*2pi/(NT), 2pi/(2T),-(N/2-1)*2pi/(NT), ...,     
COMMENT -2pi/(NT) where N is the number of elements and T is the sampling       
COMMENT interval in that dimension.                                             
COMMENT This file was produced for the first SPT data release.                  
TELESCOP= 'SPT (South Pole Telescope)' /                                        
REFERENC= 'Schaffer et al. 2011, ApJ, 743, 90' /                                
BAND    = '220 GHz '           /                                                
FIELD   = 'RA5H30DEC-55'       /                                                
X_CEN   =                  779 /x pixel location at center of Gaussian kernel   
Y_CEN   =                 1559 /y pixel location at center of Gaussian kernel   
RA_CEN  =              88.3611 /R.A. at center of Gaussian kernel               
RA_UNIT = 'deg     '           /                                                
DEC_CEN =             -54.8712 /Decl. at center of Gaussian kernel              
DEC_UNIT= 'deg     '           /                                                
RESO_K  =              27.6923 /k-space resolution of TF grid                   
TTYPE   = 'RESPONSE'           /                                                
TUNIT   = 'NONE    '           /                                                
END