ABOUT LAMBDA

FITS Header

Primary Header

SIMPLE  =                    T / Written by IDL:  Fri Oct 26 12:11:20 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    = '2007-01-03'         / 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 = 'STRIPE-TEMPLATES'   / Stripe templates                               
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 algorithm                                
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= 'HIF2    '           /  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 =        612.187290000 /  Optical frequency of initial data point in GHz
DELTA_NU=        13.6041620000 /  Optical frequency interval between data points
COMMENT                        /    in GHz                                      
NUM_FREQ=                   55 /  Number of frequency points with good data     
COMMENT                                                                         
COMMENT     The data are stored in two extension tables.  The first contains the
COMMENT     stripe identifier field (one row for each stripe) and the second    
COMMENT     contains the detector/scan mode field and the stripe template field 
COMMENT     (one row for each sky coadd).                                       
END                                                                             

Extension Header 1

XTENSION= 'BINTABLE'           / Extension type is Binary Table                 
BITPIX  =                    8 / Binary data                                    
NAXIS   =                    2 / Data are in a table                            
NAXIS1  =                   17 / Number of 8 bit bytes in each row              
NAXIS2  =                   20 / Number of rows                                 
PCOUNT  =                    0 / Number of bytes of data following table        
GCOUNT  =                    1 / Group count (always 1 for bintable extensions) 
TFIELDS =                    1 / Number of fields (columns) in the table        
COMMENT    Stripe Identifier                                                    
TFORM1  = '17A     '           /                                                
TTYPE1  = 'STR_ID  '           /  entire fieldname = STR_ID                     
TUNIT1  = '        '           /                                                
END                                                                             

Extension Header 2

XTENSION= 'BINTABLE'           / Extension type is Binary Table                 
BITPIX  =                    8 / Binary data                                    
NAXIS   =                    2 / Data are in a table                            
NAXIS1  =                   84 / Number of 8 bit bytes in each row              
NAXIS2  =               136794 / Number of rows                                 
PCOUNT  =                    0 / Number of bytes of data following table        
GCOUNT  =                    1 / Group count (always 1 for bintable extensions) 
TFIELDS =                    2 / Number of fields (columns) in the table        
COMMENT    Detector/Scan Mode ('LHSS','RHSS','LHLF','LHSF','RHLF', or 'RHSF')   
TFORM1  = '4A      '           /                                                
TTYPE1  = 'DET_MODE '          /  entire fieldname = DET_MODE                   
TUNIT1  = '        '           /                                                
COMMENT    Stripe Template                                                      
TFORM2  = '20E     '           /                                                
TDIM2   = '(20)    '           /                                                
TTYPE2  = 'STR_TEMPLATE '      /  entire fieldname = STR_TEMPLATE               
TUNIT2  = '        '           /                                                
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