--- header unit 0: primary ---
SIMPLE = T / Written by IDL: Tue Jul 22 23:44:21 2008
BITPIX = -32 / array data type
NAXIS = 2 / number of array dimensions
NAXIS1 = 128
NAXIS2 = 128
ORIGIN = 'NOAO-IRAF FITS Image Kernel July 2003' / FITS file originator
EXTNAME = 'SCI' / Extension name
EXTVER = 1 / Extension version
IRAF-TLM = '15:57:43 (10/09/2007)' / Time of last modification
DATE = '2005-04-08T14:03:53' / Date FITS file was generated
INHERIT = T / inherit the primary header
EXPNAME = 'j93k0dxjq' / exposure identifier
BUNIT = 'ELECTRONS' / brightness units
  / WFC CCD CHIP IDENTIFICATION
CCDCHIP = '-999' / CCD chip (1 or 2)
  / World Coordinate System and Related Parameters
WCSAXES = 2 / number of World Coordinate System axes
CRPIX1 = 675.000 / x-coordinate of reference pixel
CRPIX2 = -1662.00 / y-coordinate of reference pixel
CRVAL1 = '       83.815002' / first axis value at reference pixel
CRVAL2 = -5.405 / second axis value at reference pixel
CTYPE1 = 'RA---TAN' / the coordinate type for the first axis
CTYPE2 = 'DEC--TAN' / the coordinate type for the second axis
CD1_1 = -1.388732496755007E-05 / partial of first axis coordinate w.r.t. x
CD1_2 = 0.0 / partial of first axis coordinate w.r.t. y
CD2_1 = 0.0 / partial of second axis coordinate w.r.t. x
CD2_2 = 1.388732496755007E-05 / partial of second axis coordinate w.r.t. y
LTV1 = 0.0000000E+00 / offset in X to subsection start
LTV2 = 0.0000000E+00 / offset in Y to subsection start
LTM1_1 = 1.0 / reciprocal of sampling rate in X
LTM2_2 = 1.0 / reciprocal of sampling rate in Y
ORIENTAT = 0.0 / position angle of image y axis (deg. e of n)
RA_APER = 8.389975000000E+01 / RA of aperture reference position
DEC_APER = -5.417777777778E+00 / Declination of aperture reference position
PA_APER = 97.5277 / Position Angle of reference aperture center (de
VAFACTOR = 9.998986883700E-01 / velocity aberration plate scale factor
  / READOUT DEFINITION PARAMETERS
CENTERA1 = 2073 / subarray axis1 center pt in unbinned dect. pix
CENTERA2 = 1035 / subarray axis2 center pt in unbinned dect. pix
SIZAXIS1 = 4096 / subarray axis1 size in unbinned detector pixels
SIZAXIS2 = 2048 / subarray axis2 size in unbinned detector pixels
BINAXIS1 = 1 / axis1 data bin size in unbinned detector pixels
BINAXIS2 = 1 / axis2 data bin size in unbinned detector pixels
  / PHOTOMETRY KEYWORDS
PHOTMODE = 'ACS WFC1 F555W' / observation con
PHOTFLAM = 1.9559270E-19 / inverse sensitivity, ergs/cm2/Ang/electron
PHOTZPT = -2.1100000E+01 / ST magnitude zero point
PHOTPLAM = 5.3595547E+03 / Pivot wavelength (Angstroms)
PHOTBW = 3.6002335E+02 / RMS bandwidth of filter plus detector
  / REPEATED EXPOSURES INFO
NCOMBINE = 7 / number of image sets combined during CR rejecti
  / DATA PACKET INFORMATION
FILLCNT = 0 / number of segments containing fill
ERRCNT = 0 / number of segments containing errors
PODPSFF = F / podps fill present (T/F)
STDCFFF = F / ST DDF fill present (T/F)
STDCFFP = 'x5569' / ST DDF fill pattern (hex)
  / ON-BOARD COMPRESSION INFORMATION
WFCMPRSD = F / was WFC data compressed? (T/F)
CBLKSIZ = 0 / size of compression block in 2-byte words
LOSTPIX = 0 / #pixels lost due to buffer overflow
COMPTYP = 'None' / compression type performed (Partial/Full/None)
  / IMAGE STATISTICS AND DATA QUALITY FLAGS
NGOODPIX = 7798657 / number of good pixels
SDQFLAGS = 31743 / serious data quality flags
GOODMIN = 6.9403377E+00 / minimum value of good pixels
GOODMAX = 1.0505676E+05 / maximum value of good pixels
GOODMEAN = 1.9937328E+03 / mean value of good pixels
SOFTERRS = 0 / number of soft error pixels (DQF=1)
SNRMIN = 9.0294081E-01 / minimum signal to noise of good pixels
SNRMAX = 2.2234874E+02 / maximum signal to noise of good pixels
SNRMEAN = 4.3649979E+01 / mean value of signal to noise of good pixels
MEANDARK = 7.5181764E-01 / average of the dark values subtracted
MEANBLEV = 2.2621204E+03 / average of all bias levels subtracted
MEANFLSH = 0.000000 / Mean number of counts in post flash exposure
HISTORY The following throughput tables were used: crotacomp$hst_ota_007_syn.fit
HISTORY s, cracscomp$acs_wfc_im123_004_syn.fits, cracscomp$acs_f555w_003_syn.fit
HISTORY s, cracscomp$acs_wfc_ebe_win12f_005_syn.fits, cracscomp$acs_wfc_ccd1_017
HISTORY _syn.fits
OCRVAL1 = 83.886205383662 / first axis value at reference pixel
OCRVAL2 = -5.4156951661272 / second axis value at reference pixel
OCRPIX2 = 1024.0 / y-coordinate of reference pixel
OCRPIX1 = 2100.0 / x-coordinate of reference pixel
ONAXIS2 = 2048 / Axis length
ONAXIS1 = 4096 / Axis length
OCD2_2 = -1.893E-06 / partial of second axis coordinate w.r.t. y
OCD2_1 = 1.35717E-05 / partial of second axis coordinate w.r.t. x
OORIENTA = 97.78222155248061 / position angle of image y axis (deg. e of n)
OCTYPE1 = 'RA---TAN' / the coordinate type for the first axis
OCD1_1 = 2.811E-06 / partial of first axis coordinate w.r.t. x
OCD1_2 = 1.38512E-05 / partial of first axis coordinate w.r.t. y
OCTYPE2 = 'DEC--TAN' / the coordinate type for the second axis
WCSCDATE = '18:40:07 (08/04/2005)' / Time WCS keywords were copied.
A_0_2 = 2.151300289005987E-06
B_0_2 = -7.206243042255347E-06
A_1_1 = -5.183755539620177E-06
B_1_1 = 6.175807980692325E-06
A_2_0 = 8.537875913956734E-06
B_2_0 = -1.73486898234117E-06
A_0_3 = 1.178210999705287E-11
B_0_3 = -4.242793922201225E-10
A_1_2 = -5.229688232078351E-10
B_1_2 = -7.294523011004871E-11
A_2_1 = -4.162780306296113E-11
B_2_1 = -5.115511907829331E-10
A_3_0 = -4.74963055186751E-10
B_3_0 = 8.700588660561613E-11
A_0_4 = 1.849778450749615E-14
B_0_4 = -4.449400497226968E-15
A_1_3 = -2.528889679700501E-14
B_1_3 = 1.170409271744652E-14
A_2_2 = 3.868116342382394E-14
B_2_2 = -4.101021545506405E-14
A_3_1 = 9.281735111320251E-16
B_3_1 = -1.309476770131494E-15
A_4_0 = 2.465331107600243E-14
B_4_0 = -1.857053476118998E-14
A_ORDER = 4
B_ORDER = 4
HISTORY HEXTRACT: Tue Jul 22 23:44:21 2008
HISTORY Original image size was 18000 by 7500
HISTORY Extracted Image: [8325:8452,5412:5539]