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SextractorConfig Overview

Query Form

Attribute nameAttribute typeDocstringUnitVO-UCD
ANALYSIS_THRESHfloatThreshold at which CLASS_STAR and FWHM_ operatemag / arcsec^2 instr.sensitivity obs.param
BACK_FILTERSIZEintSize of background-filtering maskbackground mesh obs.param
BACK_SIZEintSize of a background meshpixel obs.param
BACK_TYPEstrThe type of background subtracted from the images (AUTO, MANUAL) TEXT
BACK_VALUEfloatThe constant value to be subtracted from the images if BACK_TYPE is MANUAL
BACKPHOTO_THICKintThickness of the background LOCAL annuluspixel obs.param
BACKPHOTO_TYPEstrBackground used to compute magnitudes (GLOBAL, LOCAL) meta.code obs.param
CATALOG_NAMEstrName of the output catalog meta.dataset meta.file
CATALOG_TYPEstrFormat of the output catalog (ASCII, ASCII_HEAD, ASCII_SKYCAT, ASCII_VOTABLE, FITS_1.0, FITS_LDAC) meta
CHECKIMAGE_NAMEstrFilename for the check-image meta.file
CHECKIMAGE_TYPEstrType of information to put in the check-image (NONE, IDENTICAL, BACKGROUND, BACKGROUND_RMS, MINIBACKGROUND, MINIBACK_RMS, -BACKGROUND, FILTERED, OBJECTS, -OBJECTS, APERTURES, SEGMENTATION) meta.code
CLEANstrClean the catalog before writing to disk (Y, N) meta.code obs.param
CLEAN_PARAMfloatEfficiency of cleaning meta
DEBLEND_MINCONTfloatMinimum contrast parameter for deblending obs.param arith.ratio
DEBLEND_NTHRESHintNumber of deblending sub-thresholds meta.number obs.param
DETECT_MINAREAintMinimum number of pixels above threshold triggering detectionpixel phys.area obs.param
DETECT_THRESHfloatDetection threshold relative to background RMS (when THRESH_TYPE is RELATIVE) instr.sensitivity obs.param
DETECT_TYPEstrType of device that produced the image (CCD, PHOTO) meta.code instr.det obs.param
FILTERstrApply filtering to the data before extraction (Y, N) instr.filter
FILTER_NAMEstrName of file contianing the filter definition instr.filter, meta.id
FLAG_IMAGEstrfilename of the flag-image obs.image meta.fits
FLAG_TYPEstrCombination method for flags on the same object (OR, AND, MIN, MAX, MOST) meta.code
GAINfloatConversion factor used for error estimates of CCD magnitudese^- / ADU instr.param obs.param
MAG_GAMMAfloatGamma of the emulsion (when DETECT_TYPE is PHOTO) phot.calib obs.param
MAG_ZEROPOINTfloatZero-point offset to be applied to magnitudesmag phot.calib phot.mag obs.param
MASK_TYPEstrMethod of masking of neighbors for photometry (NONE, BLANK, CORRECT) meta.code obs.param
MEMORY_BUFSIZEintNumber of scan-lines in the image buffer meta.number obs.param
MEMORY_OBJSTACKintMaximum number of objects that the object-stack can contain meta.number src obs.param
MEMORY_PIXSTACKintMaximum number of pixels that the pixel-stack can contain meta.number obs.param
object_idoidtypeThe object identifier

The object identifier is an attribute shared by all persistent
instances. It is the prime key, by which object identity is established
PARAMETERS_NAMEstrName of the file containing the list of parameters that will be computed and put into the catalog for each object obs.param meta.file
PHOT_APERTURESintMAG_APER aperture diameterpixel obs.param
PHOT_AUTOAPERSfloatMAG_AUTO minimum circular aperture diameters (estimation disk, measurement disk)
PHOT_AUTOPARAMSfloatMAG_AUTO controls (scaling parameter k of the first order moment and minimum R_min in units of A and B)
PIXEL_SCALEfloatPixel sizearcsec / pixel instr.scale obs.param
SATUR_LEVELfloatPixel value above which it is considered saturated (in applicable units) instr.saturation phot.count obs.param
SEEING_FWHMfloatFWHM of stellar sources (for star/galaxy separation only)arcsec instr.det.psf stat.mean obs.param
STARNNW_NAMEstrName of the file containing the neural-network weights for star/galaxy separation meta.dataset meta.file obs.param
THRESH_TYPEstrMeaning of DETECT_THRESH and ANALYSIS_THRESH parameters (RELATIVE, ABSOLUTE) meta.code instr.sensitivity obs.param
VERBOSE_TYPEstrVerbosity level (QUIET, NORMAL, EXTRA_WARNINGS, FULL) meta.code
WEIGHT_IMAGEstrFilename of the detection and measurement weight-image obs.image meta.fits obs.param
WEIGHT_TYPEstrWeighting scheme for weight-image (NONE, BACKGROUND, MAP_RMS, MAP_VAR, MAP_WEIGHT) meta.dataset meta.file obs.param

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