Altruan

You say that gamma-cat was used to create the catalog, well, what exactly do you want to add to gamma-cat then?

I think this is not being so easy right now and impossible via python and gammapy. You can search here https://gammapy.github.io/gamma-cat/sources.html and search the id of the source you are...

I would prefer to write it e.g. in this way: pos: ra: {val: 19h43m55s, err: 0h0m1s} dec: {val: +21d18m8s, err: 0d0m17s} The it is written in the same way as...

In the best case, the spectral global model is a plot like this: x-axis: energy [TeV], logarithmic scale y-axis: dN/dE * E^2 in [erg cm-2 s-1], logarithmic scale

Ok, if we stay with one single file, then I would suggest to add three additional infos: sed_ref_id lc_ref_id ds_ref_id (data set) What do you think?

I read through the code which makes the collection and the catalog and I have a few suggestions. We have https://github.com/gammapy/gamma-cat/blob/master/input/gammacat/gamma_cat_dataset.yaml which is intended to control which datasets (tev-*.yaml) go...

Well, `gamma_cat_dataset.yaml` is written down in `catalog.py` but if you take a closer look to the CatalogMaker, you see in https://github.com/gammapy/gamma-cat/blob/master/gammacat/catalog.py#L576 that not the `gamma_cat_dataset.yaml` in the input folder is...

I will take a closer look to this but I think that is a regression bug, yes. I totally agree with you about the procedure at the end of your...