SIMPLE = T / Fits standard
BITPIX = -32 / Bits per pixel
NAXIS = 2 / Number of axes
NAXIS1 = 256 / Axis length
NAXIS2 = 256 / Axis length
ORIGIN = 'NOAO-IRAF FITS Image Kernel Aug 1 1997' / FITS file originator
DATE = '26/03/99 ' / Date FITS file was generated
IRAF-TLM= '16:23:52 (26/03/1999)' / Time of last modification
EXTEND = T /file may contain extensions
NEXTEND = 5 / Number of standard extensions
FILENAME= 'n4k45yesq_cal.fits' / name of file
FILETYPE= 'SCI ' / type of data found in data file
TELESCOP= 'HST ' / telescope used to acquire data
INSTRUME= 'NICMOS ' / identifier for instrument used to acquire data
EQUINOX = 2000.0 / equinox of celestial coord. system
/ DATA DESCRIPTION KEYWORDS
ROOTNAME= 'N4K45YESQ ' / rootname of the observation set
IMAGETYP= 'EXT ' / type of exposure identifier
PARALLEL= 'NO ' / indicates if observation taken in parallel
PRIMESI = 'NICMOS ' / instrument designated as prime
/ TARGET INFORMATION
TARGNAME= 'NGC4826 ' / proposer's target name
RA_TARG = 194.184814515 / right ascension of the target (deg) (J2000)
DEC_TARG= 21.6814889964 / declination of the target (deg) (J2000)
/ PROPOSAL INFORMATION
PROPOSID= 7919 / PEP proposal identifier
LINENUM = '254.002 ' / proposal logsheet line number
PR_INV_L= 'SPARKS ' / last name of principal investigator
PR_INV_F= 'WILLIAM ' / first name of principal investigator
PR_INV_M= ' ' / middle initial of principal investigator
/ EXPOSURE INFORMATION
ORIENTAT= -101.420 / position angle of image y axis (deg. e of n)
SUNANGLE= 107.184464 / angle between sun and V1 axis
MOONANGL= 29.659475 / angle between moon and V1 axis (deg)
SUN_ALT = -62.816059 / altitude of the sun above Earth's limb
FGSLOCK = 'FINE ' / commanded FGS lock (FINE,COARSE,GYROS,UNKNOWN)
DATE-OBS= '05/06/98 ' / UT date of start of observation (dd/mm/yy)
TIME-OBS= '18:14:06 ' / UT time of start of observation (hh:mm:ss)
EXPSTART= 5.096975979934E+04 / exposure start time (Modified Julian Date)
EXPEND = 5.096976202156E+04 / exposure end time (Modified Julian Date)
EXPTIME = 191.958696 / total integration time (sec)
EXPFLAG = 'NORMAL ' / Exposure interruption indicator
/ INSTRUMENT CONFIGURATION INFORMATION
CAMERA = 3 / Camera in use (1, 2, or 3)
PRIMECAM= 3 / Primary camera for internal parallels
FOCUS = 'CAMERA3 ' / In-focus camera for this observation
APERTURE= 'NIC3 ' / aperture in use (NICi,NICi-FIX,NIC2-CORON/ACQ)
OBSMODE = 'MULTIACCUM ' / array readout mode (ACCUM, MULTIACCUM, etc.)
FILTER = 'F160W ' / filter wheel element in beam during observatio
NUMITER = 1 / number of exposure iterations
NREAD = 1 / ACCUM - number of initial and final readouts
NSAMP = 12 / RAMP, MULTI-ACCUM - number of samples
SAMP_SEQ= 'STEP64 ' / MultiAccum exposure time sequence name
CR_ELIM = 'NoCR ' / RAMP - onboard cosmic ray detection used
SAT_ELIM= 'YES ' / RAMP - on-board saturation detection used
CRTHRESH= 0.0 / RAMP - on-board cosmic ray detect threshold
SATHRESH= 0.0 / RAMP - on-board saturation threshold
VARSCALE= 0.0 / RAMP - on-board scale factor for variance
PATT_OFF= ' ' / pattern offset method (SAM, FOM, etc.)
PATTERN = 'NONE ' / pattern type
PFRAME = ' ' / ref frame of pattern (DETECTOR, SKY)
PORIENT = 0.000000 / orientation of pattern on sky (deg)
NUMPOS = 1 / number of positions in pattern
DITHSIZE= 0.000000 / size of dither steps (arc seconds)
CHOPSIZE= 0.000000 / size of chop steps (arc seconds)
PATT_POS= 1 / postion number in pattern sequence
FOMXPOS = 0.0 / X offset of FOV using NICMOS FOM
FOMYPOS = 0.0 / Y offset of FOV using NICMOS FOM
NFXTILTP= -0.148867E-01 / Fom X TILT Position (arcsec)
NFYTILTP= -0.186176E-01 / Fom Y TILT Position (arcsec)
NPXTILTP= 2723.0 / PAM X TILT Position (arcsec)
NPYTILTP= 2750.0 / PAM Y TILT Position (arcsec)
NPFOCUSP= -9.46038 / Pam FOCUS Position (deg)
TIMEPATT= 22 / timing pattern id
READOUT = 'FAST ' / detector array readout rate (FAST, SLOW)
SAMPZERO= 0.203000 / sample time of the zeroth read (sec)
HCLKRATE= 12.5 / horizontal clock rate (microseconds)
VIDEO_BW= 400.0 / readout video bandwidth (kHz)
ADCZERO = -18000.0 / analog-digital conversion zero level (DN)
ADCGAIN = 6.5 / analog-digital conversion gain (electrons/DN)
/ BACKGROUND KEYWORDS
BACKEST1= 0.0 / background estimate number 1
BACKEST2= 0.000000 / background estimate number 2
BACKEST3= 0.000000 / background estimate number 3
/ PHOTOMETRY KEYWORDS
PHOTMODE= 'NICMOS,3,F160W,DN' / photometry mode
PHOTFLAM= 3.0449175E-19 / inverse sensitivity (ergs/cm**2/Angstrom/DN)
PHOTFNU = 2.6253983E-06 / inverse sensitivity (JY*sec/DN)
PHOTZPT = -2.1100000E+01 / ST magnitude system zero point (mag)
PHOTPLAM= 1.6077564E+04 / pivot wavelength of the photmode (Angstroms)
PHOTBW = 1.1724290E+03 / RMS bandwidth of the photmode (Angstroms)
/ CALNICA CALIBRATION REFERENCE FILES
MASKFILE= 'nref$h1r1523rn_msk.fits' / static data quality file
NOISFILE= 'nref$h1t1610gn_noi.fits' / detector read noise file
NLINFILE= 'nref$h7n1654cn_lin.fits' / detector nonlinearities file
DARKFILE= 'nref$hbp2024fn_drk.fits' / dark current file
FLATFILE= 'nref$i191346on_flt.fits' / flat field file
PHOTTAB = 'ntab$i5l1512in_pht.fits' / photometric calibration table
BACKTAB = ' ' / background model parameters table
/ CALNICA CALIBRATION REFERENCE FILE PEDIGREE
MASKPDGR= 'GROUND 15/01/1997' / static data quality file pedigree
NOISPDGR= 'GROUND 27/01/1997' / detector read noise file pedigree
NLINPDGR= 'GROUND ' / detector nonlinearities file pedigree
DARKPDGR= 'MODEL 25/11/1997' / dark current file pedigree
FLATPDGR= 'INFLIGHT 09/01/1998'/ flat field file pedigree
PHOTPDGR= 'INFLIGHT 14/01/1998'/ photometric calibration table pedigree
BACKPDGR= ' ' / background model parameters table pedigree
/ CALNICA CALIBRATION SWITCHES: perform,omit
BIASCORR= 'PERFORM ' / subtract ADC bias level
ZSIGCORR= 'PERFORM ' / Zero read signal correction
ZOFFCORR= 'PERFORM ' / subtract MULTI-ACCUM zero read
MASKCORR= 'PERFORM ' / data quality initialization
NOISCALC= 'PERFORM ' / calculate statistic errors
NLINCORR= 'PERFORM ' / correct for detector nonlinearities
DARKCORR= 'PERFORM ' / dark correction
FLATCORR= 'PERFORM ' / flat field correction
UNITCORR= 'PERFORM ' / convert to count rates
PHOTCALC= 'PERFORM ' / calculate photometric keywords
CRIDCALC= 'PERFORM ' / identify cosmic ray hits
BACKCALC= 'PERFORM ' / calculate background estimates
WARNCALC= 'PERFORM ' / generate user warnings
/ CALNICA CALIBRATION INDICATORS: performed, skipped, omitted
BIASDONE= 'PERFORMED' / subtract ADC bias level
ZSIGDONE= ' ' / Zero read signal correction
ZOFFDONE= 'PERFORMED' / subtract MULTI-ACCUM zero read
MASKDONE= 'PERFORMED' / data quality initialization
NOISDONE= 'PERFORMED' / calculate statistic errors
NLINDONE= 'PERFORMED' / correct for detector nonlinearities
DARKDONE= 'PERFORMED' / dark correction
FLATDONE= 'PERFORMED' / flat field correction
UNITDONE= 'PERFORMED' / convert to count rates
PHOTDONE= 'PERFORMED' / calculate photometric keywords
CRIDDONE= 'PERFORMED' / identify cosmic ray hits
BACKDONE= ' ' / calculate background estimates
WARNDONE= ' ' / generate user warnings
CALSTAGE= 'CALNICA ' / state of calibration
CAL_VER = 'Version 3.1.2' / CALNIC code version
/ CALNICB CALIBRATION INFORMATION
ILLMCORR= 'PERFORM ' / background illumination pattern subtraction
ILLMDONE= ' ' / background illumination pattern subtraction
ILLMFILE= 'nref$h241325dn_ilm.fits' / background illumination pattern file name
ILLMPDGR= ' ' / background illumination pattern file pedigree
MEAN_BKG= 0.000000 / mean background level (DN/sec)
/ ASSOCIATION KEYWORDS
ASN_ID = 'NONE ' / unique identifier assigned to association
ASN_TAB = ' ' / name of the association table
ASN_MTYP= ' ' / Role of the Exposure in the Association
FITSDATE= '06/06/98 ' / Date FITS file was generated
EXPNAME = 'N4K45YESQ ' / 9 character exposure identifier
BUNIT = 'COUNTS/S' / brightness units
/ World Coordinate System and Related Parameters
CRPIX1 = 140.000 / x-coordinate of reference pixel
CRPIX2 = 135.000 / y-coordinate of reference pixel
CRVAL1 = 0.194184819089E+03 / first axis value at reference pixel
CRVAL2 = 0.216814940737E+02 / 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 = 0.112069E-04 / partial of first axis coordinate w.r.t. x
CD1_2 = -0.552757E-04 / partial of first axis coordinate w.r.t. y
CD2_1 = -0.554788E-04 / partial of second axis coordinate w.r.t. x
CD2_2 = -0.111659E-04 / partial of second axis coordinate w.r.t. y
/ 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)
/ READOUT PARAMETERS
SAMPNUM = 11 / MULTIACCUM sample number
SAMPTIME= 191.958696 / total integration time (sec)
DELTATIM= 63.997176 / integration time of this sample (sec)
ROUTTIME= 5.096976128899E+04 / UT time of array readout (MJD)
TDFTRANS= 0 / number of TDF transitions during current sampl
/ DATA QUALITY
ENGQUAL = 'NORMAL ' / engineering quality (NORMAL, FLAGS)
NQUAL00 = 65516 / number of pixels with all DQ flags equal zero
NQUAL01 = 0 / number of pixels with Reed-Solomon flag
NQUAL02 = 20 / number of pixels with NonLinearity flag
NQUAL03 = 0 / number of pixels with Dark flag set
NQUAL04 = 20 / number of pixels with Flat Field flag set
NQUAL05 = 0 / number of pixels with Background flag set
NQUAL06 = 20 / number of pixels with Defective flag set
NQUAL07 = 11 / number of pixels with Saturated flag set
NQUAL08 = 0 / number of pixels with Missing flag set
NQUAL09 = 0 / number of pixels with Bad Pixel flag set
NQUAL10 = 0 / number of pixels with Cosmic Ray flag set
NQUAL11 = 0 / number of pixels with Source flag set
NQUAL12 = 0 / number of pixels with unassigned flag set
GOODMEAN= 8.8697863E+00 / mean of good pixels (no dq flags set)
GOODSTDV= 1.5084184E+01 / standard deviation of good pixels
GOODMIN = -1.0207187E+01 / min value of good pixels
GOODMAX = 7.2869220E+02 / max value of good pixels
QAMEAN = 4.5717835E+00 / mean of good pixels in quadrant A
QASTDV = 1.6685849E+00 / standard deviation of good pixels in quad A
QAMIN = 2.5318903E-01 / min value of good pixels in quadrant A
QAMAX = 3.3235538E+01 / max value of good pixels in quadrant A
QBMEAN = 1.7413187E+01 / mean of good pixels in quadrant B
QBSTDV = 2.7808729E+01 / standard deviation of good pixels in quad B
QBMIN = 3.1510811E+00 / min value of good pixels in quadrant B
QBMAX = 7.2869220E+02 / max value of good pixels in quadrant B
QCMEAN = 8.3217535E+00 / mean of good pixels in quadrant C
QCSTDV = 5.0934896E+00 / standard deviation of good pixels in quad C
QCMIN = 4.2720702E-01 / min value of good pixels in quadrant C
QCMAX = 3.8452309E+01 / max value of good pixels in quadrant C
QDMEAN = 5.1703682E+00 / mean of good pixels in quadrant D
QDSTDV = 1.5537379E+00 / standard deviation of good pixels in quad D
QDMIN = -1.0207187E+01 / min value of good pixels in quadrant D
QDMAX = 1.7511045E+01 / max value of good pixels in quadrant D
HISTORY ZOFFCORR performed using n4k45yesq_raw.fits
HISTORY MASKCORR performed using nref$h1r1523rn_msk.fits
HISTORY GROUND 15/01/1997
HISTORY TV-based MASK for camera 3
HISTORY BIASCORR performed
HISTORY NOISCALC performed using nref$h1t1610gn_noi.fits
HISTORY GROUND 27/01/1997
HISTORY TV-based NIC3 FAST nreads=1 nois
HISTORY DARKCORR performed using nref$hbp2024fn_drk.fits
HISTORY MODEL 25/11/1997
HISTORY MODEL NIC3 SAMP_SEQ STEP64 dark
HISTORY NLINCORR performed using nref$h7n1654cn_lin.fits
HISTORY GROUND
HISTORY NIC3 linearity file zero-charge based corrected
HISTORY FLATCORR performed using nref$i191346on_flt.fits
HISTORY INFLIGHT 09/01/1998
HISTORY On-orbit NIC3 F160W flat
HISTORY UNITCORR performed
HISTORY PHOTCALC performed using ntab$i5l1512in_pht.fits
HISTORY INFLIGHT 14/01/1998
HISTORY Data computed using Synphot bandpar task
HISTORY CRIDCALC performed
END
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