Update throughput model to include dip between 4300 and 4500A

[alxogm]

As discussed with @julienguy it would be useful to have an updated throughput model, so that it can be included in Lyman alpha (and other) spectra simulations.

[alxogm]

We have new throughput files based on https://desi.lbl.gov/DocDB/cgi-bin/private/RetrieveFile?docid=6157;filename=Raichoor_throughput_05May2021.pdf;version=2, that we would like to use for the Lya spectra simulations. But the data directory is not present in the GitHub repository, how should I proceed to incorporate such throughput? Should the new throughput be the default or just for the Lya purpose? @julienguy

[julienguy]

Hi Alma (@alxogm), the DESIMODEL data files are in fact in SVN because there are lots of fits files. You can see the repository on the web with your trac account there https://desi.lbl.gov/trac/browser/code/desimodel/trunk/data .
See the file https://desi.lbl.gov/trac/browser/code/desimodel/trunk/README.rst for more information and link.
You will find in the README file that you can access this repo with a svn command line: svn ls https://desi.lbl.gov/svn/code/desimodel/trunk/data/ (with your trac login for this), and also commit to it.

[alxogm]

ok, thanks! I haven't used svn in a very long time, but will give it a try.