Some files are not included in the Debian package because of a too restrictive copyright: * demo/: from http://apod.nasa.gov/, may have f.e. restrictions for commercial purposes The original distribution installs some python script in /usr/bin/, which are not installed in the Debian package. They can called by the python module: fits2fits.py, image2pnm.py, removelines.py, uniformize.py, degtohms.py, hmstodeg.py, text2fits.py, votabletofits.py, and merge-columns.py. Use f.e. python3 -m astrometry.util.fits2fits instead.