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FITS Headers

firas_hpx_physical_stripes_lowf_v2.fits

Primary Header

SIMPLE  =                    T / Written by IDL:  Fri Oct 26 12:11:21 2018      
BITPIX  =                    8 / number of bits per data pixel                  
NAXIS   =                    0 / number of data axes                            
EXTEND  =                    T / FITS dataset may contain extensions            
COMMENT   FITS (Flexible Image Transport System) format defined in Astronomy and
COMMENT   Astrophysics Supplement Series v44/p363, v44/p371, v73/p359, v73/p365.
COMMENT   Contact the NASA Science Office of Standards and Technology for the   
COMMENT   FITS Definition document #100 and other FITS information.             
DATE    = '2006-10-10'         / FITS file creation date (yyyy-mm-dd)           
ORIGIN  = 'LAMBDA  '           /  Legacy Archive for Microwave Background Data  
COMMENT                        /   Analysis                                     
TELESCOP= 'COBE    '           /  COsmic Background Explorer satellite          
INSTRUME= 'FIRAS   '           /  COBE instrument [DIRBE, DMR, FIRAS]           
OBJECT  = 'ALL-SKY '           /  part of sky given [ALL-SKY, GAL-SLICE]        
PRODUCT = 'PHYS-ST-HPX '       /  Physical stripes, HEALPix Version             
EQUINOX =              2000.00 /  equinox of coords in following tables         
COMMENT                                                                         
REFERENC= 'For additional information, please refer to the' /                   
REFERENC= 'COBE Far Infrared Absolute Spectrophotometer (FIRAS)' /              
REFERENC= 'Explanatory Supplement, ed. J.C. Mather et al,' /                    
REFERENC= 'COBE Ref. Pub. No. 97-C (Greenbelt, MD: NASA/GSFC),' /               
REFERENC= 'available in electronic form from the NSSDC and LAMBDA.' /           
COMMENT                                                                         
COMMENT     HEALPix specific keywords                                           
PIXTYPE = 'HEALPIX '           / Pixel algorigthm                               
ORDERING= 'NESTED  '           / Ordering scheme                                
RESOLUTN=                    4 /Resolution index                                
NSIDE   =                   16 /Resolution parameter                            
NPIX    =                 3072 /# of pixels                                     
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =                 3071 /Last pixel (0 based)                            
COMMENT                                                                         
COMMENT     COBE specific keywords                                              
DATE-BEG= '24/11/89'           /  date of initial data represented (dd/mm/yy)   
DATE-END= '21/09/90'           /  date of final data represented (dd/mm/yy)     
COMMENT                                                                         
COMMENT     FIRAS specific keywords                                             
CHANSCAN= 'LOWF    '           /  Field indicating combination of data from     
COMMENT   / various channels and mirror transport                               
COMMENT   / mechanism scan modes.  LOWF is a combination                        
COMMENT   / of the low frequency RLSS, RLFS, RLFL, LLSS,                        
COMMENT   / LLFS, and LLFL data.  HIGH is a combination of                      
COMMENT   / the high frequency RHSS, RHSF, RHLF, LHSS,                          
COMMENT   / LHSF, and LHLF data.  HIF2, HIF3, and HIF4                          
COMMENT   / divide the HIGH data into three frequency                           
COMMENT   / bands, as indicated by the NU_ZERO and                              
COMMENT   / NUM_FREQ fields.  HRES is a combination of the                      
COMMENT   / high resolution RLLF and LLLF data.  For the                        
COMMENT   / uncombined channel/scan mode labels, the first                      
COMMENT   / two characters of the label indicate the                            
COMMENT   / channel, the first being the instrument side:                       
COMMENT   / right (R) or left (L); and the second being                         
COMMENT   / the frequency:  high (H) or low (L).  The                           
COMMENT   / third and fourth characters indicate the scan                       
COMMENT   / mode, the third being the scan length:  short                       
COMMENT   / (S) or long (L); and the fourth being the scan                      
COMMENT   / speed:  slow (S) or fast (F).  In addition,                         
COMMENT   / the scan mode may take the following values                         
COMMENT   / for low frequency data only (channel = RL or                        
COMMENT   / LL):                                                                
COMMENT   /      FS: decimated SF data;                                         
COMMENT   /      FL: truncated LF data.                                         
MODLLABL= 'PASS4   '           /  FIRAS calibration model solution label        
MISS_SEG= 'ENTIRE_MISSION'     /  FIRAS segment of mission represented          
NU_ZERO =        68.0208120000 /  Optical frequency of initial data point in GHz
DELTA_NU=        13.6041620000 /  Optical frequency interval between data points
COMMENT   /    in GHz                                                           
NUM_FREQ=                   43 /  Number of frequency points with good data     
END                                                                             

Extension Header 2

XTENSION= 'BINTABLE'           / Extension type is Binary Table                 
BITPIX  =                    8 / Binary data                                    
NAXIS   =                    2 / Data are in a table                            
NAXIS1  =                13180 / Number of 8 bit bytes in each row              
NAXIS2  =                   31 / Number of rows                                 
PCOUNT  =                    0 / Number of bytes of data following table        
GCOUNT  =                    1 / Group count (always 1 for bintable extensions) 
TFIELDS =                    4 / Number of fields (columns) in the table        
COMMENT                                                                         
COMMENT                                                                         
COMMENT    FIRAS Physical Stripe                                                
COMMENT    Project Dataset Record Structure                                     
COMMENT                                                                         
COMMENT                                                                         
COMMENT    Stripe identifier                                                    
TFORM1  = '40A     '           /                                                
TTYPE1  = 'STR_ID  '           /  entire fieldname = STR_ID                     
TUNIT1  = '        '           /                                                
COMMENT    Stripe spectrum, in MJy/sr                                           
TFORM2  = '182E    '           /                                                
TDIM2   = '(182)   '           /                                                
TTYPE2  = 'STR_SPEC '          /  entire fieldname = STR_SPEC                   
TUNIT2  = 'MJy/sr  '           /                                                
COMMENT    Stripe rect array (dimensionless)                                    
TFORM3  = '3072E   '           /                                                
TDIM3   = '(3072)  '           /                                                
TTYPE3  = 'STR_RECT '          /  entire fieldname = STR_RECT                   
TUNIT3  = '        '           /                                                
COMMENT    Stripe covariance (dimensionless)                                    
TFORM4  = '31E     '           /                                                
TDIM4   = '(31)    '           /                                                
TTYPE4  = 'STR_COVR '          /  entire fieldname = STR_COVR                   
TUNIT4  = '        '           /                                                
COMMENT                                                                         
END                                                                             

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HEASARC Director: Dr. Alan P. Smale
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