Hello all,
Some more details about the calibration in Demetra (to reply to your requests, Tony and Michel).
We're currently working on a significant improvement of the calibration tool. We consider that the automatic calibration is the normal way to use Demetra, but we know that sometime we need to "open the box" to make it (better) work.
Then, we're giving more control to the user for this calibration tool. Specially, we can edit the list of reference line, which is the core of the automatic algorithm.
See the example below:

- 20200102 Demetra calib.PNG (91.2 KiB) Viewed 3429 times
Is it what you are looking for, Tony? Anyway, you can always edit the text file with these calibration lines, but this is not convenient in real life.
Michel, regarding the Lhires III, the point is that we cannot use the same automatic calibration than Alpy, because we've no idea where we're in the spectrum. We've to define another way, requiring "human help". The good news is that we'll probably have the same need for UVEX (we're working on the instrument right now), then my feeling is that when we've the solution developped for UVEX, then we'll adapt it for the Lhires III.
Friendly,
François