NAME
bisky - remove sky gradients from FITS file
SYNOPSIS
bisky fits_file [factor=] [verbose] [maxval=] [outfile=]
DESCRIPTION
bisky determines the sky value using the mode of the data
in the four corners of the image.
It then uses bilinear interpolation and removes the gradient.
The original file is overwritten unless the outfile option
is specified.
OPTIONS
factor= chops the image into factor^2 boxes
to determine the sky value. The default value is 4.0.
maxval= sets the maximum value that the sky can have.
This is handy to use if there are a lot of saturated stars
that could give a false sky reading.
verbose-prints out the values of the sky in the factor^2
regions.
XVista index