gdl-astrolib binary package in Ubuntu Lunar amd64

 The IDL Astronomy Users Library is a central repository for low-level
 astronomy software written in the GNU Data Language (GDL).
 The library is not meant to be an integrated package, but rather is a
 collection of procedures from which users can pick and choose (and possibly
 modify) for their own use. Submitted procedures are given a cursory testing,
 but are basically stored in the library as submitted.
 .
 The library was originally written for the commercial IDL interpreter, but
 large parts are usable with the GDL interpreter as well. Other names for the
 libraries are "astron" and "idlastro".

Source package