IRAS Pointed Observations Format

Table 1 shows the header of the DS11342B1 image, the intensity map centered at RA = 5h 43.5m, DEC = -0d 7.8m, at 12 microns.

        Table 1.  Sample FITS header

SIMPLE  =                    T          / STANDARD FITS FORMAT                  
BITPIX  =                   16          / 2 BYTE TWOS-COMPL INTEGERS            
NAXIS   =                    3          / NUMBER OF AXES                        
NAXIS1  =                   19          / NZ = Z (CROSS-SCAN) GRID DIMENSION    
NAXIS2  =                  320          / NY = Y (IN-SCAN) GRID DIMENSION       
NAXIS3  =                    1          / # WAVELENGTHS                         
BSCALE  =         2.273646E+05          / TRUE=TAPE*BSCALE + BZERO              
BZERO   =         0.0                                                           
BUNIT   = 'JY/SR   '                    / INTN                                  
BLANK   =               -32768          / TAPE VALUE FOR EMPTY CELL             
CRVAL1  =         8.588284E+01          / RA AT ORIGIN (DEGREES)                
CRPIX1  =                  10.          / Z-AXIS ORIGIN (CELL) = (NZ/2)+1       
CTYPE1  = 'RA---SIN'                    / DECREASES IN VALUE AS SAMPLE INDEX    
COMMENT                                   INCREASES  (ORTHOGRAPHIC PROJECTION)  
CDELT1  =        -8.333333E-03          / Z-GRID CELL WIDTH (DEGREES)           
CROTA1  =         0.0                   / TWIST ANGLE UNDEFINED FOR Z-AXIS      
CRVAL2  =        -1.302655E-01          / DEC AT ORIGIN (DEGREES)               
CRPIX2  =                 161.          / Y-AXIS ORIGIN (CELL)= (NY/2)+1        
CTYPE2  = 'DEC--SIN'                    / INCREASES IN VALUE AS LINE INDEX      
COMMENT                                   INCREASES  (ORTHOGRAPHIC PROJECTION)  
CDELT2  =         2.083332E-03          / Y-GRID CELL WIDTH (DEGREES)           
CROTA2  =        -1.796800E+02          / ROTATES +NAXIS2 INTO +DEC AXIS (ANGLE 
COMMENT                                   MEASURED POSITIVE CCW FROM +NAXIS2 TO 
COMMENT                                   +DEC)  (DEGREES)                      
CRVAL3  =              1.2E-05          / WAVELENGTH IN METERS                  
CRPIX3  =                   1.                                                  
CTYPE3  = 'LAMBDA  '                                                            
CDELT3  =                   0.                                                  
CROTA3  =                   0.                                                  
DATAMAX =         1.182296E+08          / JY/SR    (TRUE VALUE)                 
DATAMIN =        -2.501010E+06          / JY/SR    (TRUE VALUE)                 
BIAS    =         2.667352E+07          / BIAS LEVEL (GRID REF) IN JY/SR        
EPOCH   =                1950.          / EME50                                 
DATE-OBS= '22/ 9/83'                    / DATE OF OBSERVATION (DD/MM/YY)        
DATE    = ' 1/11/85'                    / DATE THIS TAPE WRITTEN (DD/MM/YY)     
ORIGIN  = 'JPL-IRAS'                    / INSTITUTION                           
TELESCOP= 'IRAS    '                                                            
INSTRUME= 'DEEPSKY '                                                            
COMMENT                                   DSSID = DS01                          
COMMENT                                   SOP = 480; OBS =     39               
DSKYGRID=               11342.          / DEEPSKY GRID NO.                      
DATE-CR = '50151735'                    / DSCO  O/P FILE CREATION DATE(YDDDHHMM)
COMMENT                                   EST. MEDIAN NOISE = 4.547292E+05 JY/SR
COMMENT                                   GRID TWIST =  3.200000E-01 (DEG) MEAS-
COMMENT                                   URED FROM SOUTH TO +Y, CW IS POSITIVE.
COMMENT                                   GAIN NORM. USED =   9.300000E-01      
COMMENT                                   MFILT =         1                     
COMMENT                                   KFILT =         0                     
OBJECT  = 'MC2255  '                    / OBSERVER I.D.+IGO'S A.O.NO.           
COMMENT                                   IGO'S REP. SEQ. NO. =  0              
OBSERVER= 'DSD01A  '                    / DS01,2 SIS: C1 FIELD
COMMENT                                   OBJ.NAME NO. (C2) FIELD = 19          
COMMENT                                   DS01,2 SIS: D(1-4) =  5 43 31  6      
COMMENT                                   DS01,2 SIS: E(1-3) = 89 46  0         
COMMENT                                   DS01,2 SIS: PROG = DSD01A             
COMMENT    REFERENCES:                                                          
COMMENT  IRAS SDAS SOFTWARE INTERFACE SPECIFICATION(SIS) #623-94/NO. DS01       
COMMENT  IRAS SDAS SOFTWARE INTERFACE SPECIFICATION(SIS) #623-94/NO. DS02       
COMMENT  THE GUIDE TO IRAS POINTED OBSERVATIONS, NOVEMBER 1985                  
COMMENT  IRAS/SDAS SUBSYSTEM DESIGN SPEC.,DEEP SKY SURVEY SUBSYSTEM (#623-75)   
COMMENT  ASTRON. ASTROPHYS. SUPPL. SER. 44,(1981) 363-370(RE:FITS)              
END

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