# Default configuration file for SExtractor
# EB 01/03/95

#-------------------------------- Catalog ------------------------------------

CATALOG_NAME    n891.cat        # name of the output catalog
CATALOG_TYPE    ASCII           # may be ASCII or FITS 

PARAMETERS_NAME default.par   # name of the file containing catalog contents

#------------------------------- Extraction ----------------------------------

THRESHOLD_TYPE  SIGMA           # may be SIGMA or MAGNITUDE
THRESHOLD       1.5             # threshold above above background

DETECTION_TYPE  CCD             # may be CCD or PHOTO

CONVOLVE        Y               # convolve image before thresholding (Y or N)?
CONVOLVE_NAME   gauss233.con    # name of the file containing the mask
CONVOLVE_NORM   Y               # is the mask to be normalized.

EXTRACT_MINAREA 5               # minimum number of pixels above threshold

DEBLEND_NTHRESH 32              # number of deblending sub-thresholds
DEBLEND_MINCONT 0.005           # minimum contrast parameter for deblending

CLEAN           Y               # Clean spurious detections? (Y or N)?
CLEAN_PARAM     1.5             # Cleaning efficiency
CLEAN_OBJSTACK  5000            # Size of buffer containing objects

#------------------------------ Photometry -----------------------------------

PHOTOM_APERTURE 6               # FIXED aperture diameter in pixels
PHOTOM_KPAR     3.5             # Kron parameter for AUTO
PHOTOM_KSIG     4.0             # radius in sigmas for AUTO
PHOTOM_KMINSIG  4.0             # min radius in sigmas for AUTO

SATUR_LEVEL     65556.0         # level (in ADUs) at which arises saturation

MAG_ZEROPOINT   21.5            # magnitude zero-point
MAG_GAMMA       4.0             # gamma of emulsion (for photographic scans)
GAIN            6.7             # detector gain in e-/ADU.
PIXEL_SCALE     1.0             # size of pixel in arcsec.

#------------------------- Star/Galaxy Separation ----------------------------

SEEING_FWHM     2.5             # stellar FWHM in arcsec
STARNNW_NAME    default.nnw     # Neural-Network_Weight table filename

#------------------------------ Background -----------------------------------

BACK_XSIZE      64              # width of the background mesh-size
BACK_YSIZE      64              # height of the background mesh-size
BACK_FLTRXSIZE  3               # width of the background filtering mask
BACK_FLTRYSIZE  3               # height of the background filtering mask

BACKPHOTO_TYPE  GLOBAL          # may be GLOBAL or LOCAL
BACKPHOTO_THICK 24              # thickness of the background LOCAL annulus

#------------------------------ Check Image ----------------------------------

CHECKIMAGE_TYPE NONE            # may be one of NONE, BACKGROUND, -BACKGROUND,
				# OBJECTS, SEGMENTATION, APERTURES or CONVOLVED
CHECKIMAGE_NAME n891CK.fts      # Filename for the check-image

#--------------------- Memory (change with caution!) -------------------------

MEMORY_PIXSTACK 50000           # number of pixels in stack
MEMORY_BUFSIZE  512             # number of lines in buffer

#---------------- Scanning parameters (change with caution!) -----------------

SCAN_ISOAPRATIO 0.6             # maximum isoph. to apert ratio allowed

#----------------------------- Miscellaneous ---------------------------------

VERBOSE_TYPE    NORMAL          # may be QUIET, NORMAL or FULL