Instrument: FAINT OBJECT SPECTROGRAPH Revised: 10-MAY-94
File Type: TARGET ACQUISITION HEADER
SIMPLE = F image conforms to the fits standard L1
BITPIX = 32 bits per data value I2
DATATYPE= REAL*4 datatype of the array C10
NAXIS = 2 number of data axes I2
NAXIS1 = length of the first data axis I2
NAXIS2 = length of the second axis I2
GROUPS = T image is in group format L1
GCOUNT = 1 number of groups I2
PCOUNT = 27 number of group parameters I2
PSIZE = 1088 bits in the group parameter block I2
/ GROUP PARAMETERS: OSS
PTYPE1 = CRVAL1 right ascension of reference pixel (deg) C08
PDTYPE1 = REAL*8 C18
PSIZE1 = 64 I2
PTYPE2 = CRVAL2 declination of reference pixel (deg) C08
PDTYPE2 = REAL*8 C18
PSIZE2 = 64 I2
PTYPE3 = CRPIX1 x-coordinate of reference pixel C08
PDTYPE3 = REAL*4 C18
PSIZE3 = 32 I2
PTYPE4 = CRPIX2 y-coordinate of reference pixel C08
PDTYPE4 = REAL*4 C18
PSIZE4 = 32 I2
PTYPE5 = CD1_1 partial of the right ascension w.r.t. x C08
PDTYPE5 = REAL*4 C18
PSIZE5 = 32 I2
PTYPE6 = CD1_2 partial of the right ascension w.r.t. y C08
PDTYPE6 = REAL*4 C18
PSIZE6 = 32 I2
PTYPE7 = CD2_1 partial of the declination w.r.t. x C08
PDTYPE7 = REAL*4 C18
PSIZE7 = 32 I2
PTYPE8 = CD2_2 partial of the declination w.r.t. y C08
PDTYPE8 = REAL*4 C18
PSIZE8 = 32 I2
PTYPE9 = DATAMIN the minimum value of the data C08
PDTYPE9 = REAL*4 C18
PSIZE9 = 32 I2
PTYPE10 = DATAMAX the maximum value of the data C08
PDTYPE10= REAL*4 C18
PSIZE10 = 32 I2
PTYPE11 = MIR_REVR is the image mirror reversed C08
PDTYPE11= LOGICAL*4 C18
PSIZE11 = 32 I2
PTYPE12 = ORIENTAT the orientation of the image (deg) C08
PDTYPE12= REAL*4 C18
PSIZE12 = 32 I2
PTYPE13 = FILLCNT number of segments containing fill C08
PDTYPE13= INTEGER*4 C18
PSIZE13 = 32 I2
PTYPE14 = ERRCNT number of segments containing errors C08
PDTYPE14= INTEGER*4 C18
PSIZE14 = 32 I2
PTYPE15 = FPKTTIME the time of the first packet C08
PDTYPE15= REAL*8 (Modified Julian Date) C18
PSIZE15 = 64 I2
PTYPE16 = LPKTTIME the time of the last packet C08
PDTYPE16= REAL*8 (Modified Julian Date) C18
PSIZE16 = 64 I2
PTYPE17 = CTYPE1 the first coordinate type C08
PDTYPE17= CHARACTER*8 C18
PSIZE17 = 64 I2
PTYPE18 = CTYPE2 the second coordinate type C08
PDTYPE18= CHARACTER*8 C18
PSIZE18 = 64 I2
/ GROUP PARAMETERS: PODPS
PTYPE19 = APER_POS aperture used C08
PDTYPE19= CHARACTER*8 C18
PSIZE19 = 64 I2
PTYPE20 = PASS_DIR polarization pass direction C08
PDTYPE20= INTEGER*4 C18
PSIZE20 = 32 I2
PTYPE21 = YPOS y-position on photocathode C08
PDTYPE21= REAL*4 C18
PSIZE21 = 32 I2
PTYPE22 = YTYPE observation type: OBJ, SKY, BCK C08
PDTYPE22= CHARACTER*4 C18
PSIZE22 = 32 I2
PTYPE23 = EXPOSURE exposure time per pixel (seconds) C08
PDTYPE23= REAL*4 C18
PSIZE23 = 32 I2
PTYPE24 = X_OFFSET x_offset for GIMP correction (diodes) C08
PDTYPE24= REAL*4 C18
PSIZE24 = 32 I2
PTYPE25 = Y_OFFSET y_offset for GIMP correction (defl.units) C08
PDTYPE25= REAL*4 C18
PSIZE25 = 32 I2
PTYPE26 = SCT_VAL scattered light correction value C08
PDTYPE26= REAL*4 C18
PSIZE26 = 32 I2
PTYPE27 = SCT_ERR scattered light correction error C08
PDTYPE27= REAL*4 C18
PSIZE27 = 32 I2
/ FOS DATA DESCRIPTOR KEYWORDS
INSTRUME= FOS instrument in use C04 exp
ROOTNAME= rootname of the observation set C12 master
FILETYPE= IMG file type C03
BUNIT = COUNTS brightness units C18
/ GENERIC CONVERSION KEYWORDS
HEADER = science header line exists L1 master
TRAILER = reject array exists L1 master
YWRDSLIN= science words per packet I4
YLINSFRM= packets per frame I4
/ CALIBRATION FLAGS AND INDICATORS
GRNDMODE= ground software mode C18 master
DETECTOR= detector in use: amber, blue C05 master
APER_ID = aperture id C03 master
POLAR_ID= polarizer id C01 master
POLANG = initial angular position of polarizer R4 master
FGWA_ID = FGWA id C03 master
FCHNL = first channel I4 master
NCHNLS = number of channels I4 master
OVERSCAN= overscan number I4 master
NXSTEPS = number of x steps I4 master
YFGIMPEN= T onboard GIMP correction enabled (T/F) L1
YFGIMPER= NO error in onboard GIMP correction (YES/NO) C03
/ CALIBRATION REFERENCE FILES
DEFDDTBL= F UDL disabled diode table used L1 master
BACHFILE= background header file C18 master
FL1HFILE= first flat-field header file C18 master
FL2HFILE= second flat-field header file C18 master
IV1HFILE= first inverse sensitivity header file C18 master
IV2HFILE= second inverse sensitivity header file C18 master
RETHFILE= waveplate retardation header file C18 master
DDTHFILE= disabled diode table header file C18 master
DQ1HFILE= first data quality initialization header file C18 master
DQ2HFILE= second data quality initialization header file C18 master
CCG2 = paired pulse correction C18 master
CCS0 = aperture parameters C18 master
CCS1 = aperture position parameters C18 master
CCS2 = sky emission line regions C18 master
CCS3 = big and sky filter widths and prism X0 C18 master
CCS4 = polarimetry parameters C18 master
CCS5 = sky shifts C18 master
CCS6 = wavelength coefficients C18 master
CCS7 = GIMP correction scale factores C18 master
CCS8 = predicted background count rates C18 master
CCS9 = scattered light parameters C18 master
/ CALIBRATION SWITCHES
CNT_CORR= PERFORM count to count rate conversion C08 master
OFF_CORR= PERFORM GIMP correction C08 master
PPC_CORR= PERFORM paired-pulse correction C08 master
BAC_CORR= PERFORM background subtraction C08 master
GMF_CORR= PERFORM scale reference background C08 master
SCT_CORR= PERFORM scattered light correction (PERFORM, OMIT) C08 master
FLT_CORR= PERFORM flat fielding C08 master
SKY_CORR= PERFORM sky subtraction C08 master
WAV_CORR= PERFORM wavelength scale generation C08 master
FLX_CORR= PERFORM flux scale generation C08 master
ERR_CORR= PERFORM propagated error computation C08 master
MOD_CORR= PERFORM ground software mode dependent reductions C08 master
/ PATTERN KEYWORDS
INTS = number of integrations I4 master
YBASE = y base I4 master
YRANGE = y range I4 master
YSTEPS = number of y steps I4 master
YSPACE = yrange * 32 / ysteps R4 master
SLICES = number of time slices I4 master
NPAT = number of patterns per readout I4 master
NREAD = number of readouts per memory clear I4 master
NMCLEARS= number of memory clears per acquisition I4 master
YSTEP1 = first ystep data type: OBJ, SKY, BCK, NUL C03 master
YSTEP2 = second ystep data type: OBJ, SKY, BCK, NUL C03 master
YSTEP3 = third ystep data type: OBJ, SKY, BCK, NUL C03 master
XBASE = X-deflection base I4 master
XPITCH = X-deflection pitch between diode I4 master
YPITCH = Y-deflection pitch between diodes I4 master
/ CALIBRATION KEYWORDS
LIVETIME= accumulator open time (unit=7.8125 microsec) I4 master
DEADTIME= accumulator close time (unit=7.8125 microsec) I4 master
MAXCLK = maximum clock count I4 master
PA_APER = position ang of aperture used with target (deg) R4 master
NOISELM = burst noise rejection limit I4 master
OFFS_TAB= n/a GIMP offsets (post-pipeline processing only) C18
MINWAVE = 0.0 minimum wavelength (angstroms) R4 master
MAXWAVE = -1.0 maximum wavelength (angstroms) R4 master
/ STATISTICAL KEYWORDS
DATE = date this file was written (dd/mm/yy) C08 master
PKTFMT = packet format code I4
PODPSFF = 0=(no podps fill), 1=(podps fill present) C01 master
STDCFFF = 0=(no st dcf fill), 1=(st dcf fill present) C01 master
STDCFFP = st dcf fill pattern (hex) C04
/ APERTURE POSITION
RA_APER1= right ascension of the aperture (deg) R8 master
DECAPER1= declination of the aperture (deg) R8 master
KYDEPLOY= COSTAR deployed for FOS (T or F) L1
APER_FOV= Aperture field of view (arcsec),BLANK for calib C18 master
/ EXPOSURE INFORMATION
EQUINOX = J2000 equinox of the celestial coordinate system C08 exp
SUNANGLE= angle between sun and V1 axis (deg) R4 exp
MOONANGL= angle between moon and V1 axis (deg) R4 exp
SUN_ALT = altitude of the sun above Earth's limb (deg) R4 exp
FGSLOCK = commanded FGS lock (FINE,COARSE,GYROS,UNKNOWN) C07 exp
DATE-OBS= UT date of start of observation (dd/mm/yy) C08 exp
TIME-OBS= UT time of start of observation (hh:mm:ss) C08 exp
EXPSTART= exposure start time (Modified Julian Date) R8 exp+ma
EXPEND = exposure end time (Modified Julian Date) R8 exp
EXPTIME = exposure duration (seconds)--calculated R4 exp+ma
EXPFLAG = Exposure interruption indicator C13 exp
/ TARGET & PROPOSAL ID
TARGNAME= proposer's target name C30 exp
RA_TARG = right ascension of the target (deg) (J2000) R8 exp
DEC_TARG= declination of the target (deg) (J2000) R8 exp
PROPOSID= PEP proposal identifier I4 all
PEP_EXPO= PEP exposure identifier including sequence C15 all
LINENUM = PEP proposal line number C15 exp
SEQLINE = PEP line number of defined sequence C15 exp
SEQNAME = PEP define/use sequence name C15 exp
END
