image2xy - Source extractor.
image2xy [options] fitsname.fits
Read a FITS file, find objects, and write out X, Y, FLUX to
fitsname.xy.fits.
- -e extension
- Read from a single FITS extension
- -O
- Overwrite existing output file.
- -o file
- Write XYlist to given filename.
- -L order
- Lanczos order
- -8
- Don't use optimization for byte (u8) images.
- -H
- Downsample by a factor of 2 before running simplexy.
- -d factor
- Downsample by an integer factor before running simplexy.
- -D factor
- Downsample, if necessary, by this many factors of two.
- -s scale
- Set median-filter box size (default 100 pixels)
- -w width
- Set Gaussian PSF sigma (default 1 pixel)
- -g sigma
- Set image noise level
- -p
significance
- Set significance level of peaks in sigmas (default 8 sigmas)
- -a saddle
- Set "saddle" level joining peaks i sigmas (default 5
sigmas)
- -P plane
- Pull out a single plane of a multi-color image (default: first plane)
- -b
- Don't do (median-based) background subtraction
- -G background
- Subtract this 'global' background value; implies -b
- -m
- Set maximum extended object size for deblending (default 2000 pixels)
- -S file
- Save background-subtracted image to this filename (FITS float image)
- -B file
- Save background image to filename
- -U file
- Save smoothed background-subtracted image to filename
- -M file
- Save mask image to filename
- -C file
- Save connected-components image to filename
- -v
- Verbose. repeat for more and more verboseness
- image2xy
'file.fits[1]'
- Process first extension.
- image2xy
'file.fits[2]'
- Process second extension
- image2xy
file.fits+2
- Same as above
The Astrometry.net team. Principal investigators are David W. Hogg
(NYU) and Dustin Lang (CMU).