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SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                   16 / number of bits per data pixel
NAXIS   =                    2 / number of data axes
NAXIS1  =                  512 / length of data axis   1
NAXIS2  =                  512 / length of data axis   2
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.
CONTENT = 'IMAGE   '           / HRI IMAGE
ORIGIN  = 'USRSDC  '           / origin of processed data
DATE    = '29/06/95'           / FITS creation date (DD/MM/YY)
TELESCOP= 'ROSAT   '           / mission name
INSTRUME= 'HRI     '           / instrument name
OBS_MODE= 'POINTING'           / obs mode: POINTING,SLEW, OR SCAN
IRAFNAME= 'rh600685a01_im1.imh' / IRAF file name
MJDREFI =                48043 / MJD integer  SC clock start
MJDREFF =  8.79745370370074E-01 / MJD fraction SC clock start
ZERODATE= '01/06/90'           / UT date of SC start (DD/MM/YY)
ZEROTIME= '21:06:50'           / UT time of SC start (HH:MM:SS)
RDF_VERS= '3.4     '           / Rationalized Data Format release version number
RDF_DATE= '27-APR-1995'        / Rationalized Data Format release date
PROC_SYS= 'SASS7_7 '           / Processing system
PROCDATE= '29-JUN-1995 12:05:31' / SASS SEQ processing start date
CHECKSUM= 'ZbjCfagAZagAdagA'   / HDU checksum updated on 29/06/95
DATASUM = 'WbWcaZTZZbTbaZTZ'   / data checksum updated on 29/06/95
REVISION=                    2 / Revision number of processed data
FILTER  = 'NONE    '           / filter id: NONE OR BORON
OBJECT  = 'NGC 3310'           / name of object
RA_NOM  =         1.596900E+02 / nominal RA (deg)
DEC_NOM =         5.350000E+01 / nominal DEC (deg)
ROLL_NOM=        -4.199278E+01 / nominal ROLL (deg CCW  North)
EQUINOX =         2.000000E+03 / equinox
OBS_ID  = 'US600685H-1.N1'     / observation ID
ROR_NUM =               600685 / ROR number
OBSERVER= 'HECKMAN, Prof., TIMOTHY,MARTIN' / PI name
SETUPID = 'NOMINAL '           / Instrument setup
DATE-OBS= '18/04/95'           / UT date of obs start (DD/MM/YY)
TIME-OBS= '19:43:17.000'       / UT time of obs start (HH:MM:SS)
DATE_END= '17/05/95'           / UT date of obs end   (DD/MM/YY)
TIME_END= '03:49:07.000'       / UT time of obs end   (HH:MM:SS)
MJD-OBS =         4.982582E+04 / MJD of seq start
SCSEQBEG=            153959799 / SC seq start(sec)
SCSEQEND=            156408149 / SC seq end  (sec)
NUM_OBIS=                   13 / Number of obs intervals (OBIs)
LIVETIME=         4.145600E+04 / Live time
DTCOR   =         9.907561E-01 / Dead time correction factor
ONTIME  =         4.184279E+04 / On time
HDUCLASS= 'OGIP    '           /
HDUCLAS1= 'IMAGE   '           /
HDUCLAS2= 'TOTAL   '           /
RADECSYS= 'FK5     '           / WCS for this file
CTYPE1  = 'RA---TAN'           / Axis type for dim 1 (e.g. RA---TAN)
CTYPE2  = 'DEC--TAN'           / Axis type for dim 2 (e.g. DEC--TAN)
CRVAL1  =       1.59690002E+02 / Sky coord of 1st axis (deg)
CRVAL2  =       5.35000000E+01 / Sky coord of 2nd axis (deg)
CDELT1  =      -2.22222228E-03 / X degrees per pixel
CDELT2  =       2.22222228E-03 / Y degrees per pixel
CRPIX1  =       2.56468750E+02 / X pixel of tangent point
CRPIX2  =       2.56531250E+02 / Y pixel of tangent point
LTM1_1  =       6.25000000E-02 / X(logical)= X(physical)*LTM1_1
LTM2_2  =       6.25000000E-02 / Y(logical)= Y(physical)*LTM2_2
WAT0_001= 'system=physical'    /
PHAMIN  =                    1 / Minimum PHA channel in image
PHAMAX  =                   15 / Maximum PHA channel in image
BLKFACT =                   16 / Blocking factor for image
COMMENT
COMMENT   This extension contains the total band image.
COMMENT   The total band contains photons with 1 <= PHA <= 15 .
COMMENT   This image has been blocked by a factor of 16.
COMMENT
COMMENT   COORDINATE CONVENTION
COMMENT   This image uses the convention in which (1,1) is the
COMMENT   coordinate of the center of the pixel in the lower
COMMENT   left-hand corner.
COMMENT
HISTORY   SASS files used:
HISTORY             HRIMPE.SEQ
HISTORY   The image has been converted to a coordinate
HISTORY   system in which the declination increases
HISTORY   along the +Y axis and right ascension increased
HISTORY   along the -X axis by the following transformation:
HISTORY
HISTORY     image(x,y) = HRIMPE(x, 512-y+1)
HISTORY
END

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