[fitsbits] Substract sky background

Boris Basic boris.basic at free.fr
Sun Jun 8 14:42:26 EDT 2003


Thanks!

I'm using Solaris 8 so all should work well.

"Stephen Walton" <stephen.walton at csun.edu> a écrit dans le message de news:
mailman.1055096161.22627.fitsbits at listmgr.cv.nrao.edu...
> Well, I for one use the IRAF background task to carry out these
> operations.  It works well, is very flexible, and is free.  It is even
> flexible enough to divide a solar active region image by the background
> quiet sun level, which is what I've used it for lately.  The downside is
> that you have to download and install all of IRAF to use it.
> http://iraf.noao.edu/ .  A brief glance at the ftools documentation at
> http://heasarc.gsfc.nasa.gov/docs/software/ftools/ indicates that you
> could probably put some of those tools together with a shell script to
> do what you want as well.
>
> If you are using a Microsoft OS, someone else will have to answer your
> question :-)
>
> On Sat, 2003-06-07 at 14:47, Boris Basic wrote:
> > Hi!
> >
> > I'm new to this newsgroup, so my question may have already been asked
here.
> > My problem is that I need to write a program that must calculate the
mean
> > value of the sky background of a FITS file,
>
> --
> Stephen Walton <stephen.walton at csun.edu>
> Dept. of Physics & Astronomy, Cal State Northridge
>





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