SIMPLE  =                    F / image conforms to the FITS standard            
BITPIX  =                   32 / bits per data value                            
DATATYPE= 'REAL*4  '           / datatype of the group array                    
NAXIS   =                    2 / number of data axes                            
NAXIS1  =                 1024 /                                                
NAXIS2  =                 1024 /                                                
GROUPS  =                    T / image is in group format                       
GCOUNT  =                    1 / number of groups                               
PCOUNT  =                    2 / number of group parameters                     
PSIZE   =                   64 / bits in the group parameter block              
                                                                                
                               / GROUP PARAMETERS: PODPS CALIBRATION            
PTYPE1  = 'DATAMIN           ' / minimum data value in the group                
PDTYPE1 = 'REAL*4            ' / datatype of parameter 1                        
PSIZE1  =                   32 / number of bits in parameter 1                  
PTYPE2  = 'DATAMAX           ' / maximum data value in the group                
PDTYPE2 = 'REAL*4            ' / datatype of parameter 2                        
PSIZE2  =                   32 / number of bits in parameter 2                  
                                                                                
                               / FILE DESCRIPTOR KEYWORDS                       
INSTRUME= 'FOC               ' / instrument ID                                  
FILETYPE= 'BACKGROUND        ' / type of reference file                         
HEADNAME= 'TMPLRSDPBACX.HHH  ' / reference header file name                     
DATANAME= 'TMPLRSDPBACX.HHH  ' / reference data file name                       
DATE    = '13/04/94          ' / date this file was written                     
                                                                                
                               / KEYWORDS USED TO SELECT BAC REF FILES          
OPTCRLY = 'F48     '           / optical relay:  F48, F96                       
PXFORMT = 'NORMAL  '           / format of the image:  NORMAL, ZOOM             
                                                                                
                               / DATA DESCRIPTOR KEYWORDS                       
SAMPBEG =                    1 / first sample number                            
LINEBEG =                    1 / first line number                              
DATAFRMT= 'COUNT/SECOND'       / data format                                    
                                                                                
PEDIGREE= '        '           / data source (INFLIGHT,GROUND,MODEL,DUMMY), date
DESCRIP = '        '           / description of reference data                  
                                                                                
END