astrometry : Automated astrometric calibration programs and service ( http://astrometry.net/ )
casacore : Core libraries for the Common Astronomy Software Applications ( https://github.com/casacore/casacore )
healpix : Hierarchical Equal Area isoLatitude Pixelization of a sphere ( http://healpix.sourceforge.net/ )
kapteyn : Collection of python tools for astronomy ( https://www.astro.rug.nl/software/kapteyn/ )
montage : Toolkit for assembling FITS images into mosaics ( http://montage.ipac.caltech.edu/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a stefantalpalaru
For Paludis use this rsync : rsync://gentoo.zugaina.org/stefantalpalaru-portage
If you have a problem : ycarus(-at-)zugaina.org