fix after removing ra/dec from source

Closes #234 (closed)

The syntax here is a little simpler now after previous changes to the waveform generator.

changed the description

approved this merge request

I've just run an example where this previously failed and this MR fixes it. @moritz.huebner @paul-lasky can we approve this ASAP.

I'll also note that contrary to my issue one also needs to be using a non-standard set of sampling parameters (e.g. chirp mass etc)

approved this merge request

merged

mentioned in commit 39f73c4c