A mockup for Gaia DR2, done by Jan Rybicki and friends.

Source data were rsynced up by the authors, March 2018; these were FITS
bintables with the columns of generated_data.  Markus has stashed these away
somewhere.  What's now in data is the result of dumping the non-NULL columns of
main using bin/write_dump.py.  *If* we ever have to re-ingest this table,
you'll have to work form the view definition to get to a few of the
quanitities.

Test set:

stilts tpipe in=data/parsec_extinctions_lookup.fits cmd="every 100" out=pel-test.fits