iraf.net

Dear Frank,I would like to know if I can trim some images (bias and flats) that
have already a BIASSEC,DATASEC and CCDSEC keyword (and are not the full
size of the chip), using ccdproc.The header of my bias (flats) look like the one below, with important
parameters (first they looked like: [x1,x2:,y1:y2], and I 'hedited' them) :
BIASSEC = '[0:0,260:790]' / overscan portion of frame
DATASEC = '[263:785,260:790]' / image portion of frame
CCDSEC = '[526:1570,520:1580]' / orientation to full frame [x1:y1,x2:y2]*bias_header1:*
set21_0006.fits[523,531][ushort]: BIAS N.1
No bad pixels, min=0., max=0. (old)
Line storage mode, physdim [523,531], length of user area 8505 s.u.
Created Tue 18:31:47 09-Oct-2007, Last modified Tue 18:33:12 09-Oct-2007
Pixel file "set21_0006.fits" [ok]
EXTEND = F / File may contain extensions
BSCALE = 1.000000E0 / REAL = TAPE*BSCALE + BZERO
BZERO = 3.276800E4 /
ORIGIN = 'NOAO-IRAF FITS Image Kernel July 2003' / FITS file originator
DATE = '2007-10-09T16:31:47' / Date FITS file was generated
IRAF-TLM= '18:33:12 (09/10/2007)' / Time of last modification
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.
BLANK = 32768 / Value used for NULL pixels
DATAMEAN= 457.3 / Mean pixel value
INSTRUME= 'CAFOS 2.2' / instrument ID
TELESCOP= 'CA-2.2 ' / telescope-id
OBJECT = 'BIAS N.1' / Target description
OBSERVER= 'C. Rodriguez' / Name of observer
FILENAME= 'set21_0006.fits' / Name of this File
EXPTIME = 0.00 / Total integration time (sec)
DARKTIME= 0.24 / Total elapsed time (sec)
RA = 286.515408 / 19:06:03.7 RA [deg]
DEC = -30.00000 / -30:00:00.0 DEC [deg]
HA = 1.000000 / DD:MM:JJ DEC (J2000) pointing (deg)
AIRMASS = 2.58376 / airmass
LST = 68763.698000 / 19:06:03.7 sid. time [sec]
UTC = 69306.635000 / 19:15:06.6 U.T. at start [sec]
UT_START= 69306.635000 / 19:15:06.6 U.T. at start [sec]
UT_END = 69333.135000 / 19:15:33.1 U.T. [sec]
CTYPE1 = 'PIXEL ' / Pixel coordinate system
CTYPE2 = 'PIXEL ' / Pixel coordinate system
CRVAL1 = 528.0 / start point rel. to 1. phys. pixel in
axis 1
CRVAL2 = 522.0 / start point rel. to 1. phys. pixel in
axis 2
CRPIX1 = 2.0 / increment of axis 1 in (pixels *
binning-factor
CRPIX2 = 2.0 / increment of axis 2 in (pixels *
binning-factor
CDELT1 = 2.0 / Binning factor along X
CDELT2 = 2.0 / Binning factor along Y
PC001001= 1.00000000 / Translation matrix element
PC001002= 0.00000000 / Translation matrix element
PC002001= 1.00000000 / Translation matrix element
PC002002= 0.00000000 / Translation matrix element
EQUINOX = 0.000000 / Equinox in years
RADECSYS= 'NN ' / FK5?
MJD-OBS = 54364.80210000 / modified jul. date
DATE-OBS= '2007-09-21T19:15:06' / file creation
OBSERVAT= 'DSAZ ' / observatory
IMAGETYP= 'dark ' / Type of observation
CAMID = 'CCD15 ' / Camera used
CCDNAME = 'SITE#1d_15' / Detector used
CCDPSIZ = 24.00 / Pixelsize in microns
CCDORI = 'XX ' / Orientation of CCD
CCDSPEED= 'normal ' / CCD readout speed
CCDBINX = 2 / Binning factor along X
CCDBINY = 2 / Binning factor along Y
CCDGAIN = 20.000 / total analog Gain
CCDSENS = 2.300 / Sensitivity at selected Gain (e-/DN)
CCDMEAN = 64.100 / Bias of CCD at selected Gain (DN)
CCDSAT = 190000.000 / Saturation of CCD (e-)
CCDRON = 5.060 / Readout-nois of CCD at selected Gain (e-)
CCDTEMP = 30.0 / dewar temperature in deg. C
BIASSEC = '[0:0,260:790]' / overscan portion of frame
DATASEC = '[263:785,260:790]' / image portion of frame
CCDSEC = '[526:1570,520:1580]' / orientation to full frame [x1:y1,x2:y2]
ORIGSECX= 2048 / original size full frame nx
ORIGSECY= 2048 / original size full frame ny
CCDCONFN= 'SITE#1d_15_n.CCD' / Name of Configuration-File
CCDLOGFN= './data.0918190151107' / Name of Log-File
HIERARCH CAHA DET CCDS = 1 / # of CCDs in detector array
HIERARCH CAHA DET ID = 'CCD15' / Detector System ID
HIERARCH CAHA DET EXP TYPE = 'dark'/ Type of exposure
HIERARCH CAHA DET CCD1 NAME = 'SITE#1d_15'/ Detector CCD name
HIERARCH CAHA DET CCD1 ID = '9094ABR05-01'/ Detector CCD ID
HIERARCH CAHA DET CCD1 TEMP = 30.0 / dewar temperature in deg. C
HIERARCH CAHA DET CCD1 NX = 2048 / # of pixels along x
HIERARCH CAHA DET CCD1 NY = 2048 / # of pixels along y
HIERARCH CAHA DET CCD1 PSZX = 24.00 / Pixelsize in microns
HIERARCH CAHA DET CCD1 PSZY = 24.00 / Pixelsize in microns
HIERARCH CAHA DET CCD1 RON = 5.060 / Readout-nois of CCD at selected
Gain (e-)
HIERARCH CAHA DET CCD1 CF = 2.300 / Sensitivity at selected Gain (e-/DN)
HIERARCH CAHA DET CCD1 GAIN = 20.000 / total analog Gain
HIERARCH CAHA DET CCD1 SATUR = 190000.000 / Saturation of CCD (e-)
HIERARCH CAHA DET CCD1 MEAN = 64.100 / Bias of CCD at selected Gain (DN)
HIERARCH CAHA DET CCD1 READ SPEED = 'normal'/ CCD readout speed
HIERARCH CAHA DET CCD1 READ SHIFT = 0 / # of lines shifted between exp
HIERARCH CAHA DET CCD1 READ CLOCK = 'SITE#1d_15_n.CCD'/ Name of clock
pattern fi
HIERARCH CAHA DET CCD1 OVSCX = 0 / overscan region in X
HIERARCH CAHA DET CCD1 DATAMIN = 89.0 / The lowest value (in DN) read
out from t
HIERARCH CAHA DET CCD1 DATAMAX = 3344.0 / The highest value (in DN) read
out fro
HIERARCH CAHA DET CCD1 DATAMEAN = 457.3 / The mean value read out from
the detec
HIERARCH CAHA DET CCD1 WINDOWS = 1 / # of windows read out
HIERARCH CAHA DET CCD1 WIN1 STRX = 263 / Lower left pixel in X
HIERARCH CAHA DET CCD1 WIN1 STRY = 260 / Lower left pixel in Y
HIERARCH CAHA DET CCD1 WIN1 NX = 523 / # of pixels along X
HIERARCH CAHA DET CCD1 WIN1 NY = 531 / # of pixels along Y
HIERARCH CAHA DET CCD1 WIN1 BINX = 2 / Binning factor along X
HIERARCH CAHA DET CCD1 WIN1 BINY = 2 / Binning factor along Y
HIERARCH CAHA DET CCD1 OUTPUTS = 1 / # of outputs used on CCD1
HIERARCH CAHA DET DARKTIM = 0.237 / Dark current time
HIERARCH CAHA DET REQTIM = 0.000 / Requested exposure time
HIERARCH CAHA DET SHUT TYPE = 'NN'/ Type of shutter used
HIERARCH CAHA DET SHUT ID = 'NN'/ Shutter manufacturer, model serial number
HIERARCH CAHA DET SHUT TMOPEN = 0.000 / Time required to open shutter
completely
HIERARCH CAHA DET SHUT TMCLOSE = 0.000 / Time required to close shutter
complete
HIERARCH CAHA DET LOGFN = './data.0918190151107'/ Name of Log-File
PA-CASS = 90.00 / position angle of adapter
TELSCALE= 85.4 / telescope scale
POSTN-RA= 68763.70 / tel. position Right Ascension
POSTN-DE= -108000.00 / tel. position Declination
POSTN-HA= 0.00 / tel. position Hour Angle
UNI-TIME= 69306.63 / Universal Time
SID-TIME= 68763.70 / Sidereal Time [sec]
JUL-DATE= 2454365.3021 / julian date
HIERARCH CAHA TEL GEOELEV = 2168 / elev. above sea
HIERARCH CAHA TEL GEOLAT = 37.2236 / geographic lat.
HIERARCH CAHA TEL GEOLON = -2.5463 / geographic long.
HIERARCH CAHA TEL DOME.AZ = 30.00 / dome azimut [degr]
HIERARCH CAHA TEL DOME.EL_LOW_E = 0.00 / dome door low lim.
HIERARCH CAHA TEL DOME EL_UPP_E = 0.00 / dome door upper lim.
HIERARCH CAHA TEL FOCU ID = 'CASS ' / ID of used focus
HIERARCH CAHA TEL MIRR S1 COLLAREA = 2.94 / eff. coll. area of S1 [m**2]
HIERARCH CAHA TEL FOCU F_RATIO = 8.00 / f-ratio
HIERARCH CAHA TEL FOCU LEN = 17.610 / focal length [m]
HIERARCH CAHA TEL FOCU SCALE = 0.0826 / focus scale mm/arcsec
HIERARCH CAHA TEL FOCU VALUE = 22.430 / focus rel. setting
HIERARCH CAHA TEL POS SET RA = 481350.000000 / 08:54:50.0 RA preset [sec]
HIERARCH CAHA TEL POS SET DEC = 20.070278 / +20:04:13.0 DEC preset [deg]
HIERARCH CAHA TEL POS SET EQUINOX = 2000.0 / eq preset
HIERARCH CAHA TEL POS AZ_START = 0.00 / telescope azimuth at start
HIERARCH CAHA TEL POS EL_START = 22.77 / telescope elevation at start
HIERARCH CAHA TEL POS HA_START = 0.000000 / 00:00:00.0 HA [deg]
HIERARCH CAHA GEN AMBI WIND SPEED = 7.5 / wind-speed[m/s]
HIERARCH CAHA GEN AMBI WIND DIR = 265 / wind dir[deg.]
HIERARCH CAHA GEN AMBI RHUM = 100 / relative humidity[%]
HIERARCH CAHA GEN AMBI PRES = 777.0 / air pressure
HIERARCH CAHA GEN AMBI TEMP = 6.6 / air-temperature[Celsius]
HIERARCH CAHA ADA POSANG = 90.00 / position angle of adapter
INSTRKEY= 'CA_JUN_99' / keywords (HIERACH)
INSTRID = 'CAFOS 2.2' / instrument ID
INSTRMOD= 'Polarizer'
INSTRSTA= 'JUNE 1997' / last update
INSTRANG= 0.00 / orientation wrt N-S
INSTRSCL= 0.530 / scale [arcsec/pixel]
INSTRSC1= 0.000000 / parameter 1
INSTRSC2= 0.000000 / parameter 2
INSTRPIX= 24.0 / pixel size
INSTRPX0= 1014.37 / pixel at x=0
INSTRPY0= 1045.35 / pixel at y=0
INSFOCUS= 431.00 / micron
INSFZERO= 431.00 / focus: NO filter
INSAPID = 'FREE '
INSAPNAM= ' ' / explanation
INSAPX = 1014.37 / x-pixel at aperture
INSAPY = 1014.47 / y-pixel at aperture
INSAPDX = 50000.00 / micron
INSAPDY = 128.00 / micron: width
INSAPROT= 0 / at the moment
INSFLID = 'FILT-12 ' / filter no.
INSFLNAM= 'free '
INSFLFOC= 0 / focus offset
INSFLWL = 495.0 / lambda [nm]
INSFLDWL= 14.7 / delta lambda [nm]
INSGRID = 'GRISM- 5' / grism no.
INSGRNAM= 'Lyot Stop '
INSGRROT= 120.04 / grism angle
INSGRWL0= 0.0 / central lambda [nm]
INSGRRES= 0.000 / resolution [nm/pix]
INSPOFPI= 'FREE '
INSPOROT= 0 / rotator position
INSFPZ = 0 / z value
INSFPWL = 'not used' / lambda [nm]
INSFPDWL= 'not used' / delta lambda [nm]
INSFPORD= 'not used' / interference order
INSCALST= F / Calib IN (T/F)
INSCALID= 'Lamp ' / lamp comb.
INSCALNM= ' / / '
HIERARCH CAHA INS FOCU VALUE = 431 / micron
HIERARCH CAHA INS FOCU ZERO = 431 / focus: NO filter
HIERARCH CAHA INS APERT ID = 'FREE'
HIERARCH CAHA INS APERT NAME = ' '/ explanation
HIERARCH CAHA INS FILT1 ID = 'FILT-12'/ filter no.
HIERARCH CAHA INS FILT1 NAME = 'free'
HIERARCH CAHA INS FILT1 DFOCUS = 0.0 / focus offset
HIERARCH CAHA INS FILT1 WLEN = 495.00 / lambda [nm]
HIERARCH CAHA INS FILT1 WFWHM = 14.70 / delta lambda [nm]
HIERARCH CAHA INS GRIS1 ID = 'GRISM- 5'/ grism no.
HIERARCH CAHA INS GRIS1 NAME = 'Lyot Stop'
HIERARCH CAHA INS GRIS1 ROTANG = 120.04 / grism angle
HIERARCH CAHA INS GRIS1 WLEN = 0.00 / central lambda [nm]
HIERARCH CAHA INS GRIS1 DISP = 0.00 / resolution [nm/pix]
HIERARCH CAHA INS OPTI1 STATUS = F
HIERARCH CAHA INS OPTI1 Z-VALUE = 0 / z value
HIERARCH CAHA INS OPTI1 WLEN = 0.000 / lambda [nm]
HIERARCH CAHA INS OPTI1 WFWHM = 0.000 / delta lambda [nm]
HIERARCH CAHA INS OPTI1 ORDER = 0 / interference order
HIERARCH CAHA INS MIRR1 STATUS = F / Calib IN (T/F)
HIERARCH CAHA INS LAMP1 NAME = 'HGCD'/ name of lamp1
HIERARCH CAHA INS LAMP1 STATUS = 'OFF'/ lamp status
HIERARCH CAHA INS LAMP2 NAME = 'HE'/ name of lamp2
HIERARCH CAHA INS LAMP2 STATUS = 'OFF'/ lamp status
HIERARCH CAHA INS LAMP3 NAME = 'RB'/ name of lamp3
HIERARCH CAHA INS LAMP3 STATUS = 'OFF'/ lamp status
HIERARCH CAHA INS LAMP4 NAME = 'CONT'/ name of lamp4
HIERARCH CAHA INS LAMP4 STATUS = 'OFF'/ lamp status
HIERARCH CAHA TEL POS AZ_END = 0.00 / telescope azimuth at end [deg]
HIERARCH CAHA TEL POS EL_END = 22.77 / telescope elevation at end [deg]
HIERARCH CAHA TEL POS HA_END = 0.000000 / 00:00:00.0 HA [deg] at end
And I would like to have my image headers looking like the header below,
with important parameters:
BIASSEC = '[0:0,300:700]' / overscan portion of frame
DATASEC = '[300:700,300:790]' / image portion of frame
CCDSEC = '[600:1400,600:1400]' / orientation to full frame [x1:y1,x2:y2]*image_header2:*
hs1707_0001.fits[401,401][ushort]: HS1707.1
No bad pixels, min=0., max=62062.
Line storage mode, physdim [401,401], length of user area 8505 s.u.
Created Mon 21:20:55 24-Sep-2007, Last modified Tue 18:12:00 09-Oct-2007
Pixel file "hs1707_0001.fits" [ok]
EXTEND = F / File may contain extensions
BSCALE = 1.000000E0 / REAL = TAPE*BSCALE + BZERO
BZERO = 3.276800E4 /
ORIGIN = 'DSAZ ' / FITS file originator
DATE = '2007-09-24T19:20:55' / Date FITS file was generated
IRAF-TLM= '18:12:00 (09/10/2007)' / Time of last modification
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.
BLANK = 32768 / Value used for NULL pixels
DATAMAX = 62062. / Maximal pixel value
DATAMIN = 0. / Minimal pixel value
DATAMEAN= 6972.1 / Mean pixel value
INSTRUME= 'CAFOS 2.2' / instrument ID
TELESCOP= 'CA-2.2 ' / telescope-id
OBJECT = 'HS1707.1' / Target description
OBSERVER= 'C. Rodriguez' / Name of observer
FILENAME= 'hs1707_0001.fits' / Name of this File
EXPTIME = 20.00 / Total integration time (sec)
DARKTIME= 20.42 / Total elapsed time (sec)
RA = 257.188621 / 17:08:45.3 RA [deg]
DEC = 61.25607 / +61:15:21.8 DEC [deg]
HA = 1.000000 / DD:MM:JJ DEC (J2000) pointing (deg)
AIRMASS = 1.17803 / airmass
LST = 69822.417000 / 19:23:42.4 sid. time [sec]
UTC = 69654.735000 / 19:20:54.7 U.T. at start [sec]
UT_START= 69654.735000 / 19:20:54.7 U.T. at start [sec]
UT_END = 69695.635000 / 19:21:35.6 U.T. [sec]
CTYPE1 = 'PIXEL ' / Pixel coordinate system
CTYPE2 = 'PIXEL ' / Pixel coordinate system
CRVAL1 = 602.0 / start point rel. to 1. phys. pixel in
axis 1
CRVAL2 = 602.0 / start point rel. to 1. phys. pixel in
axis 2
CRPIX1 = 2.0 / increment of axis 1 in (pixels *
binning-factor
CRPIX2 = 2.0 / increment of axis 2 in (pixels *
binning-factor
CDELT1 = 2.0 / Binning factor along X
CDELT2 = 2.0 / Binning factor along Y
PC001001= 1.00000000 / Translation matrix element
PC001002= 0.00000000 / Translation matrix element
PC002001= 1.00000000 / Translation matrix element
PC002002= 0.00000000 / Translation matrix element
EQUINOX = 0.000000 / Equinox in years
RADECSYS= 'NN ' / FK5?
MJD-OBS = 54367.80610000 / modified jul. date
DATE-OBS= '2007-09-24T19:20:55' / file creation
OBSERVAT= 'DSAZ ' / observatory
IMAGETYP= 'science ' / Type of observation
CAMID = 'CCD15 ' / Camera used
CCDNAME = 'SITE#1d_15' / Detector used
CCDPSIZ = 24.00 / Pixelsize in microns
CCDORI = 'XX ' / Orientation of CCD
CCDSPEED= 'normal ' / CCD readout speed
CCDBINX = 2 / Binning factor along X
CCDBINY = 2 / Binning factor along Y
CCDGAIN = 20.000 / total analog Gain
CCDSENS = 2.300 / Sensitivity at selected Gain (e-/DN)
CCDMEAN = 64.100 / Bias of CCD at selected Gain (DN)
CCDSAT = 190000.000 / Saturation of CCD (e-)
CCDRON = 5.060 / Readout-nois of CCD at selected Gain (e-)
CCDTEMP = 30.0 / dewar temperature in deg. C
BIASSEC = '[0:0,300:700]' / overscan portion of frame
DATASEC = '[300:700,300:700]' / image portion of frame
CCDSEC = '[600:1400,600:1400]' / orientation to full frame [x1:y1,x2:y2]
ORIGSECX= 2048 / original size full frame nx
ORIGSECY= 2048 / original size full frame ny
CCDCONFN= 'SITE#1d_15_n.CCD' / Name of Configuration-File
CCDLOGFN= './data.0918190151107' / Name of Log-File
HIERARCH CAHA DET CCDS = 1 / # of CCDs in detector array
HIERARCH CAHA DET ID = 'CCD15' / Detector System ID
HIERARCH CAHA DET EXP TYPE = 'science'/ Type of exposure
HIERARCH CAHA DET CCD1 NAME = 'SITE#1d_15'/ Detector CCD name
HIERARCH CAHA DET CCD1 ID = '9094ABR05-01'/ Detector CCD ID
HIERARCH CAHA DET CCD1 TEMP = 30.0 / dewar temperature in deg. C
HIERARCH CAHA DET CCD1 NX = 2048 / # of pixels along x
HIERARCH CAHA DET CCD1 NY = 2048 / # of pixels along y
HIERARCH CAHA DET CCD1 PSZX = 24.00 / Pixelsize in microns
HIERARCH CAHA DET CCD1 PSZY = 24.00 / Pixelsize in microns
HIERARCH CAHA DET CCD1 RON = 5.060 / Readout-nois of CCD at selected
Gain (e-)
HIERARCH CAHA DET CCD1 CF = 2.300 / Sensitivity at selected Gain (e-/DN)
HIERARCH CAHA DET CCD1 GAIN = 20.000 / total analog Gain
HIERARCH CAHA DET CCD1 SATUR = 190000.000 / Saturation of CCD (e-)
HIERARCH CAHA DET CCD1 MEAN = 64.100 / Bias of CCD at selected Gain (DN)
HIERARCH CAHA DET CCD1 READ SPEED = 'normal'/ CCD readout speed
HIERARCH CAHA DET CCD1 READ SHIFT = 0 / # of lines shifted between exp
HIERARCH CAHA DET CCD1 READ CLOCK = 'SITE#1d_15_n.CCD'/ Name of clock
pattern fi
HIERARCH CAHA DET CCD1 OVSCX = 0 / overscan region in X
HIERARCH CAHA DET CCD1 DATAMIN = 0.0 / The lowest value (in DN) read out
from th
HIERARCH CAHA DET CCD1 DATAMAX = 62062.0 / The highest value (in DN)
read out fr
HIERARCH CAHA DET CCD1 DATAMEAN = 6972.1 / The mean value read out from
the dete
HIERARCH CAHA DET CCD1 WINDOWS = 1 / # of windows read out
HIERARCH CAHA DET CCD1 WIN1 STRX = 300 / Lower left pixel in X
HIERARCH CAHA DET CCD1 WIN1 STRY = 300 / Lower left pixel in Y
HIERARCH CAHA DET CCD1 WIN1 NX = 401 / # of pixels along X
HIERARCH CAHA DET CCD1 WIN1 NY = 401 / # of pixels along Y
HIERARCH CAHA DET CCD1 WIN1 BINX = 2 / Binning factor along X
HIERARCH CAHA DET CCD1 WIN1 BINY = 2 / Binning factor along Y
HIERARCH CAHA DET CCD1 OUTPUTS = 1 / # of outputs used on CCD1
HIERARCH CAHA DET DARKTIM = 20.423 / Dark current time
HIERARCH CAHA DET REQTIM = 20.000 / Requested exposure time
HIERARCH CAHA DET SHUT TYPE = 'NN'/ Type of shutter used
HIERARCH CAHA DET SHUT ID = 'NN'/ Shutter manufacturer, model serial number
HIERARCH CAHA DET SHUT TMOPEN = 0.000 / Time required to open shutter
completely
HIERARCH CAHA DET SHUT TMCLOSE = 0.000 / Time required to close shutter
complete
HIERARCH CAHA DET LOGFN = './data.0918190151107'/ Name of Log-File
PA-CASS = 90.00 / position angle of adapter
TELSCALE= 85.4 / telescope scale
POSTN-RA= 61725.27 / tel. position Right Ascension
POSTN-DE= 220521.85 / tel. position Declination
POSTN-HA= 8097.15 / tel. position Hour Angle
UNI-TIME= 69654.74 / Universal Time
SID-TIME= 69822.42 / Sidereal Time [sec]
JUL-DATE= 2454368.3061 / julian date
HIERARCH CAHA TEL GEOELEV = 2168 / elev. above sea
HIERARCH CAHA TEL GEOLAT = 37.2236 / geographic lat.
HIERARCH CAHA TEL GEOLON = -2.5463 / geographic long.
HIERARCH CAHA TEL DOME.AZ = 147.00 / dome azimut [degr]
HIERARCH CAHA TEL DOME.EL_LOW_E = 40.00 / dome door low lim.
HIERARCH CAHA TEL DOME EL_UPP_E = 64.00 / dome door upper lim.
HIERARCH CAHA TEL FOCU ID = 'CASS ' / ID of used focus
HIERARCH CAHA TEL MIRR S1 COLLAREA = 2.94 / eff. coll. area of S1 [m**2]
HIERARCH CAHA TEL FOCU F_RATIO = 8.00 / f-ratio
HIERARCH CAHA TEL FOCU LEN = 17.610 / focal length [m]
HIERARCH CAHA TEL FOCU SCALE = 0.0826 / focus scale mm/arcsec
HIERARCH CAHA TEL FOCU VALUE = 22.430 / focus rel. setting
HIERARCH CAHA TEL POS SET RA = 481350.000000 / 08:54:50.0 RA preset [sec]
HIERARCH CAHA TEL POS SET DEC = 20.070278 / +20:04:13.0 DEC preset [deg]
HIERARCH CAHA TEL POS SET EQUINOX = 2000.0 / eq preset
HIERARCH CAHA TEL POS AZ_START = 149.65 / telescope azimuth at start
HIERARCH CAHA TEL POS EL_START = 58.09 / telescope elevation at start
HIERARCH CAHA TEL POS HA_START = 33.738117 / 02:14:57.1 HA [deg]
HIERARCH CAHA GEN AMBI WIND SPEED = 5.0 / wind-speed[m/s]
HIERARCH CAHA GEN AMBI WIND DIR = 324 / wind dir[deg.]
HIERARCH CAHA GEN AMBI RHUM = 87 / relative humidity[%]
HIERARCH CAHA GEN AMBI PRES = 780.6 / air pressure
HIERARCH CAHA GEN AMBI TEMP = 10.6 / air-temperature[Celsius]
HIERARCH CAHA ADA POSANG = 90.00 / position angle of adapter
INSTRKEY= 'CA_JUN_99' / keywords (HIERACH)
INSTRID = 'CAFOS 2.2' / instrument ID
INSTRMOD= 'Polarizer'
INSTRSTA= 'JUNE 1997' / last update
INSTRANG= 0.00 / orientation wrt N-S
INSTRSCL= 0.530 / scale [arcsec/pixel]
INSTRSC1= 0.000000 / parameter 1
INSTRSC2= 0.000000 / parameter 2
INSTRPIX= 24.0 / pixel size
INSTRPX0= 1014.37 / pixel at x=0
INSTRPY0= 1045.35 / pixel at y=0
INSFOCUS= 431.00 / micron
INSFZERO= 431.00 / focus: NO filter
INSAPID = 'FREE '
INSAPNAM= ' ' / explanation
INSAPX = 1014.37 / x-pixel at aperture
INSAPY = 1014.47 / y-pixel at aperture
INSAPDX = 50000.00 / micron
INSAPDY = 128.00 / micron: width
INSAPROT= 0 / at the moment
INSFLID = 'FILT-12 ' / filter no.
INSFLNAM= 'free '
INSFLFOC= 0 / focus offset
INSFLWL = 495.0 / lambda [nm]
INSFLDWL= 14.7 / delta lambda [nm]
INSGRID = 'GRISM- 5' / grism no.
INSGRNAM= 'Lyot Stop '
INSGRROT= 120.04 / grism angle
INSGRWL0= 0.0 / central lambda [nm]
INSGRRES= 0.000 / resolution [nm/pix]
INSPOFPI= 'FREE '
INSPOROT= 0 / rotator position
INSFPZ = 0 / z value
INSFPWL = 'not used' / lambda [nm]
INSFPDWL= 'not used' / delta lambda [nm]
INSFPORD= 'not used' / interference order
INSCALST= F / Calib IN (T/F)
INSCALID= 'Lamp ' / lamp comb.
INSCALNM= ' / / '
HIERARCH CAHA INS FOCU VALUE = 431 / micron
HIERARCH CAHA INS FOCU ZERO = 431 / focus: NO filter
HIERARCH CAHA INS APERT ID = 'FREE'
HIERARCH CAHA INS APERT NAME = ' '/ explanation
HIERARCH CAHA INS FILT1 ID = 'FILT-12'/ filter no.
HIERARCH CAHA INS FILT1 NAME = 'free'
HIERARCH CAHA INS FILT1 DFOCUS = 0.0 / focus offset
HIERARCH CAHA INS FILT1 WLEN = 495.00 / lambda [nm]
HIERARCH CAHA INS FILT1 WFWHM = 14.70 / delta lambda [nm]
HIERARCH CAHA INS GRIS1 ID = 'GRISM- 5'/ grism no.
HIERARCH CAHA INS GRIS1 NAME = 'Lyot Stop'
HIERARCH CAHA INS GRIS1 ROTANG = 120.04 / grism angle
HIERARCH CAHA INS GRIS1 WLEN = 0.00 / central lambda [nm]
HIERARCH CAHA INS GRIS1 DISP = 0.00 / resolution [nm/pix]
HIERARCH CAHA INS OPTI1 STATUS = F
HIERARCH CAHA INS OPTI1 Z-VALUE = 0 / z value
HIERARCH CAHA INS OPTI1 WLEN = 0.000 / lambda [nm]
HIERARCH CAHA INS OPTI1 WFWHM = 0.000 / delta lambda [nm]
HIERARCH CAHA INS OPTI1 ORDER = 0 / interference order
HIERARCH CAHA INS MIRR1 STATUS = F / Calib IN (T/F)
HIERARCH CAHA INS LAMP1 NAME = 'HGCD'/ name of lamp1
HIERARCH CAHA INS LAMP1 STATUS = 'OFF'/ lamp status
HIERARCH CAHA INS LAMP2 NAME = 'HE'/ name of lamp2
HIERARCH CAHA INS LAMP2 STATUS = 'OFF'/ lamp status-f
HIERARCH CAHA INS LAMP3 NAME = 'RB'/ name of lamp3
HIERARCH CAHA INS LAMP3 STATUS = 'OFF'/ lamp status
HIERARCH CAHA INS LAMP4 NAME = 'CONT'/ name of lamp4
HIERARCH CAHA INS LAMP4 STATUS = 'OFF'/ lamp status
HIERARCH CAHA TEL POS AZ_END = 149.57 / telescope azimuth at end [deg]
HIERARCH CAHA TEL POS EL_END = 58.02 / telescope elevation at end [deg]
HIERARCH CAHA TEL POS HA_END = 33.908850 / 02:15:38.1 HA [deg] at endWhat I tried to do with ccdproc was:
PACKAGE = ccdred
TASK = ccdprocimages = @allbiasflats List of CCD images to correct
(output = t//@allbiasflats) List of output CCD images
(ccdtype= ) CCD image type to correct
(max_cac= 0) Maximum image caching memory (in Mbytes)
(noproc = no) List processing steps only?(fixpix = no) Fix bad CCD lines and columns?
(oversca= yes) Apply overscan strip correction?
(trim = yes) Trim the image?
(zerocor= no) Apply zero level correction?
(darkcor= no) Apply dark count correction?
(flatcor= no) Apply flat field correction?
(illumco= no) Apply illumination correction?
(fringec= no) Apply fringe correction?
(readcor= no) Convert zero level image to readout
correction?
(scancor= no) Convert flat field image to scan correction?(readaxi= line) Read out axis (column|line)
(fixfile= ) File describing the bad lines and columns
(biassec= [0:0,300:700]) Overscan strip image section
(trimsec= [300:700,300:700]) Trim data section
(zero = ) Zero level calibration image
(dark = ) Dark count calibration image
(flat = ) Flat field images
(illum = ) Illumination correction images
(fringe = ) Fringe correction images
(minrepl= 1.) Minimum flat field value
(scantyp= shortscan) Scan type (shortscan|longscan)
(nscan = 1) Number of short scan lines(interac= no) Fit overscan interactively?
(functio= legendre) Fitting function
(order = 1) Number of polynomial terms or spline pieces
(sample = *) Sample points to fit
(naverag= 1) Number of sample points to combine
(niterat= 1) Number of rejection iterations
(low_rej= 3.) Low sigma rejection factor
(high_re= 3.) High sigma rejection factor
(grow = 0.) Rejection growing radius
(mode = ql)
ERROR: Error in DATASEC parameter
(I've also tried:
(biassec= [0:0,41:441]) Overscan strip image section
(trimsec= [38:438,41:441]) Trim data section
To be inside the lenght of the data-frame [401,401]A ccdlist of my bias (flats) looks like:
set21_0006.fits[523,531][ushort][dark][]:BIAS N.1
And image:
hs1707_0001.fits[401,401][ushort][unknown][]:HS1707.1I could crop the image to the desired pixel length with:
>imcopy bias[38:438,41:441]Of course headers do not get updated. I could do zero and flatcombine,
but when I want to correct from bias and flat with ccdproc, I get again
the same error message:
images = @allhs1707 List of CCD images to correct
(output = fz//@allhs1707) List of output CCD images
(ccdtype= ) CCD image type to correct
(max_cac= 0) Maximum image caching memory (in Mbytes)
(noproc = no) List processing steps only?(fixpix = no) Fix bad CCD lines and columns?
(oversca= no) Apply overscan strip correction?
(trim = no) Trim the image?
(zerocor= yes) Apply zero level correction?
(darkcor= no) Apply dark count correction?
(flatcor= yes) Apply flat field correction?
(illumco= no) Apply illumination correction?
(fringec= no) Apply fringe correction?
(readcor= no) Convert zero level image to readout
correction?
(scancor= no) Convert flat field image to scan correction?(readaxi= line) Read out axis (column|line)
(fixfile= ) File describing the bad lines and columns
(biassec= ) Overscan strip image section
(trimsec= ) Trim data section
(zero = ../20070921/Zero21) Zero level calibration image
(dark = ) Dark count calibration image
(flat = ../20070921/Flat21) Flat field images
(illum = ) Illumination correction images
(fringe = ) Fringe correction images
(minrepl= 1.) Minimum flat field value
(scantyp= shortscan) Scan type (shortscan|longscan)
(nscan = 1) Number of short scan lines(interac= no) Fit overscan interactively?
(functio= legendre) Fitting function
(order = 1) Number of polynomial terms or spline pieces
(sample = *) Sample points to fit
(naverag= 1) Number of sample points to combine
(niterat= 1) Number of rejection iterations
(low_rej= 3.) Low sigma rejection factor
(high_re= 3.) High sigma rejection factor
(grow = 0.) Rejection growing radius
(mode = ql)ERROR: Error in DATASEC parameter
I greatly would appreciate your help to solve the problem,
Regards,
Cristina.

Hello Cristina,Yes your are allowed to have data which is only part of the full CCD. It is important that the various SEC parameters are self-consistent and map to the
same CCD pixels. In other words, CCDPROC will check that what it identifies as the CCD pixels from CCDSEC match when doing bias subtraction and flat fielding. It is possible for the zero and flat calibrations to be bigger than the object images and the program will automatically applied the proper subsection (again assuming the initial CCDSEC description was correct and self-consistent).My first comment is that IRAF sections are one indexed. SoBIASSEC = '[0:0,260:790]' / overscan portion of frame is incorrect. It is also not clear to me from what you sent if the overscan consists of columns (almost always the case) or rows (which means the
serial readout of the CCD is stored as colums which is unusual). Another question about the overscan is whether there is a single column (maybe it is
just column 1 if BIASSEC was really intended to be [1:1,260:790]).Next the sizes of the various sections must be the same. The size is computed
from [x12,y1:y2] as xsize=x2-x1+1 and ysize=y2-y1+1. Any error about size mismatches would be based on differences in xsize and ysize. In particular, the sizes of CCDSEC and DATASEC need to be the same. However, a caveat is that in imred.ccdred these must match while in mscred.ccdred it is possible to have DATASEC be smaller by the binning factor. Which CCDPROC are you using?In your case it looks like a 2x2 binning was done. If you are using imred.ccdproc, or it is simpler to ignore the binning and treat everything as unbinned pixels, then you need to adjust CCDSEC to be something like DATASEC. In fact it might be that you should just set CCDSEC to be the same as DATASEC.So maybe (!?) you needBIASSEC = '[1:1,*] / Overscan is just the first column
DATASEC = '[263:785,260:790]
CCDSEC = '[263:785,520:1580]I hope this helps.Yours,
Frank Valdes

I made a mistake and the end of my previous response should be:BIASSEC = '[1:1,*]' / Overscan is just the first column
DATASEC = '[263:785,260:790]'
CCDSEC = '[263:785,260:790]'