NAME

       coadd - Co-add images for astrometry.net

SYNOPSIS

       coadd image ext weight ext wcs ext...

              use "none" as weight filename for no weighting

OPTIONS

       -w file
              Output WCS file (default: input file)

       -e extension
              FITS extension to read WCS from (default: primary extension, 0)

       -o file
              Output image file

       -O order
              Lanczos order (default 3)

       -p plane
              Image plane to read (default 0)

       -N     Use nearest-neighbour resampling (default: Lanczos)

       -s sigma
              Smooth before resampling

       -D     Divide each image by its weight image before starting

       -v     More verbose

AUTHOR

       The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and Dustin Lang (CMU).

SEE ALSO

       http://astrometry.net