radio-astro-tools/spectral-cube — pull request #58 by keflavich (2014-04-23 18:29:01+00:00)
Title: Convert spectral coordinate systems (velo <-> freq)

e.g., implement pyspeckit's unit conversion tools for spectral_cube:
https://github.com/keflavich/pyspeckit/blob/master/pyspeckit/spectrum/units.py

This will solve #55