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FITS Headers

FIRAS_LINE_PROFILES_LLLF.FITS

Primary Header

SIMPLE  =                    T / file does conform to FITS standard             
BITPIX  =                   32 / 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    = '28/09/97'           / FITS file creation date (dd/mm/yy)             
ORIGIN  = 'CDAC    '           /  Cosmology Data Analysis Center                
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 = 'LLINE-PR'           /  Low frequency line profiles                   
EQUINOX =               2000.0 /  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.' /                      
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)     
PIXRESOL=                    6 /  Quad tree pixel resolution [6, 9]             
COMMENT                                                                         
COMMENT     FIRAS specific keywords                                             
CHANSCAN= 'LLLF    '           /  Channel and mirror transport mechanism scan   
COMMENT                          / mode identifier.  The first two characters   
COMMENT                          / indicate the channel, the first being the    
COMMENT                          / instrument side: right (R) or left (L); and  
COMMENT                          / the second being the frequency: high (H) or  
COMMENT                          / low (L).  The third and fourth characters    
COMMENT                          / indicate the scan mode, the third being the  
COMMENT                          / scan length: short (S) or long (L); and the  
COMMENT                          / fourth being the scan speed: slow (S) or     
COMMENT                          / fast (F).  In addition, the scan mode may    
COMMENT                          / take the following values for low frequency  
COMMENT                          / data only (channel = RL or LL):              
COMMENT                          /      FS: decimated SF data;                  
COMMENT                          /      FL: truncated LF data.                  
COMMENT                          / The scan mode value FA indicates: for high   
COMMENT                          / frequency data (channel = RH or LH), a       
COMMENT                          / combination of SF and LF data; and for low   
COMMENT                          / frequency data (channel = RL or LL), a       
COMMENT                          / combination of FS and FL data.               
MODLLABL= 'PASS4   '           /  FIRAS calibration model solution label        
MISS_SEG= 'ENTIRE_MISSION'     /  FIRAS segment of mission represented          
NU_ZERO =            23.807283 /  Optical frequency of initial data point in GHz
DELTA_NU=            3.4010405 /  Optical frequency interval between data points
COMMENT                          / in GHz                                       
NUM_FREQ=                  182 /  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  =                 6720 / Number of 8 bit bytes in each row              
NAXIS2  =                    1 / Number of rows                                 
PCOUNT  =                    0 / Number of bytes of data following table        
GCOUNT  =                    1 / Group count (always 1 for bintable extensions) 
TFIELDS =                    8 / Number of fields (columns) in the table        
COMMENT                                                                         
COMMENT                                                                         
COMMENT    FIRAS Low Frequency Line Profiles                                    
COMMENT    Project Dataset Record Structure                                     
COMMENT                                                                         
COMMENT                                                                         
COMMENT    115.27 GHz CO (J=1-0) line profile, in cm*MJy/(nanowatts/m^2)        
TFORM1  = '210E    '           /                                                
TDIM1   = '(210)   '           /                                                
TTYPE1  = 'CO_115  '           /  entire fieldname = CO_115                     
TUNIT1  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    230.54 GHz CO (J=2-1) line profile, in cm*MJy/(nanowatts/m^2)        
TFORM2  = '210E    '           /                                                
TDIM2   = '(210)   '           /                                                
TTYPE2  = 'CO_230  '           /  entire fieldname = CO_230                     
TUNIT2  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    345.80 GHz CO (J=3-2) line profile, in cm*MJy/(nanowatts/m^2)        
TFORM3  = '210E    '           /                                                
TDIM3   = '(210)   '           /                                                
TTYPE3  = 'CO_345  '           /  entire fieldname = CO_345                     
TUNIT3  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    424.75 GHz O2 line profile, in cm*MJy/(nanowatts/m^2)                
TFORM4  = '210E    '           /                                                
TDIM4   = '(210)   '           /                                                
TTYPE4  = 'O2_424  '           /  entire fieldname = O2_424                     
TUNIT4  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    461.04 GHz CO (J=4-3) line profile, in cm*MJy/(nanowatts/m^2)        
TFORM5  = '210E    '           /                                                
TDIM5   = '(210)   '           /                                                
TTYPE5  = 'CO_461  '           /  entire fieldname = CO_461                     
TUNIT5  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    492.23 GHz [C I] line profile, in cm*MJy/(nanowatts/m^2)             
TFORM6  = '210E    '           /                                                
TDIM6   = '(210)   '           /                                                
TTYPE6  = 'C_I_492 '           /  entire fieldname = C_I_492                    
TUNIT6  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    556.89 GHz H2O line profile, in cm*MJy/(nanowatts/m^2)               
TFORM7  = '210E    '           /                                                
TDIM7   = '(210)   '           /                                                
TTYPE7  = 'H2O_556 '           /  entire fieldname = H2O_556                    
TUNIT7  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT    576.27 GHz CO (J=5-4) line profile, in cm*MJy/(nanowatts/m^2)        
TFORM8  = '210E    '           /                                                
TDIM8   = '(210)   '           /                                                
TTYPE8  = 'CO_576  '           /  entire fieldname = CO_576                     
TUNIT8  = 'cm*MJy/(nanowatts/m^2)' /                                            
COMMENT                                                                         
END                                                                             

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