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BrownDwarf / gollum

A microservice for programmatic access to precomputed synthetic spectral model grids in astronomy
https://gollum-astro.readthedocs.io/
MIT License
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Documentation or utility function for fetching the raw model grids #17

Closed gully closed 2 years ago

gully commented 2 years ago

We should add documentation, scripts, or a utility function for automatically fetching the model grids. The automatic fetching is tricky because we can't assume everyone has, say, wget or whatever. We might want to use beautifulsoup (or more likely requests) to make the requests: that's another dependency to add in---which is OK but adds some complexity.

The other hiccup is that the grids are huge, so we wouldn't want to just cram them into a hidden folder, and we'd want to make sure the user knows how big they will be in advance.

gully commented 2 years ago

BTW this is a partial duplicate of https://github.com/OttoStruve/muler/issues/41 by @gmace

gully commented 2 years ago

Here is the link to the high-res PHOENIX models:

ftp://phoenix.astro.physik.uni-goettingen.de/HiResFITS/

nattieg commented 2 years ago

Note for later documentation: if using the ftp link above, the default path assumed by gollum of ~/libraries/raw/PHOENIX/ must point to the contents within the HiResFITS/PHOENIX-ACES-AGSS-COND-2011/ directory. In other words, the PHOENIX path should point to a directory that contains the metallicity directories, NOT the HiResFITS directory alone. It also assumes the default path directory includes the wavelength file WAVE_PHOENIX-ACES-AGSS-COND-2011.fits. This requires copying the wavelength file from its original location in HiResFITS/to be in the local equivalent of HiResFITS/PHOENIX-ACES-AGSS-COND-2011/

gully commented 2 years ago

Hooray! We have a new documentation page for fetching the models and mimicking the directory structure. These should be considered "guides" at the moment because not-all-OS'es will have wget, and the versions of some of the bash commands may be platform specific.

https://gollum-astro.readthedocs.io/en/latest/fetching_models.html

We could aspire to make a standalone script that automatically fetches the models and creates the directory structure. Happy to work on that with folks who are interested!

Thank you to @gmace and @nattieg for requesting this valuable documentation, and providing some guidance towards it.