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SIMPLE-AstroDB / SIMPLE-db

Curated collection of data for low mass stars, brown dwarfs, and directly imaged exoplanets.
https://simple-bd-archive.org/
BSD 3-Clause "New" or "Revised" License
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Create fits spectra From MOCA #521

Open kelle opened 5 months ago

kelle commented 5 months ago

MOCA has already "standardized" a bunch of spectra. Consider creating FITS files from MOCA instead of converting piece meal. @jgagneastro

jgagneastro commented 5 months ago

I have already planned writing a code to export the moca spectra to uniform FITS files, I will send it once it's done.Jonathan Gagné, Ph.D.Conseiller Scientifique / Scientific AdvisorPlanétarium Rio Tinto Alcan | Espace pour la vieProfesseur associé, Université de Montréal4801 av. Pierre-de Coubertin, Montréal, Québec H1V 3V4On Jun 27, 2024, at 9:09 PM, Kelle Cruz @.***> wrote: MOCA has already "standardized" a bunch of spectra. Consider creating FITS files from MOCA instead of converting piece meal. @jgagneastro

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kelle commented 5 months ago

I have strong thoughts and feelings about how the fits files should be formatted so let's discuss or collaborate before you do too much!

jgagneastro commented 5 months ago

Noted !My initial plan was to use these columns as FITS header entries:MOCA DBmocadb.caExcept for the moca_ keys and the "comments" column (which contains complete original headers).I haven't given much thoughts to what units the actual spectra would be stored in.Jonathan Gagné, Ph.D.Conseiller Scientifique / Scientific AdvisorPlanétarium Rio Tinto Alcan | Espace pour la vieProfesseur associé, Université de Montréal4801 av. Pierre-de Coubertin, Montréal, Québec H1V 3V4On Jun 27, 2024, at 11:23 PM, Kelle Cruz @.***> wrote: I have strong thoughts and feelings about how the fits files should be formatted so let's discuss or collaborate before you do too much!

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kelle commented 5 months ago

A pull request to specutils is almost fully approved which includes a new writer which will make a roundtrippable FITS file. So you'll read in the spectra to a Spectrum1D object and then write it out. It'll look something like this:

my_spectra = Spectrum1D(wavelength*unit, flux*unit, uncertainty, header)
Spectrum1D.write('my_spectra.fits`)