Support for Level 3 EVE data products

[wtbarnes]

We currently support downloading and parsing Level 0 and Level 1 EVE data via Fido and TimeSeries. Support for Level 2 data is still an outstanding issue (#2407). Additionally, there are Level 3 data products. These are daily averages from each spectral band from each instrument. Additional details in the links below. We should consider adding support for downloading and parsing these files.

• EVE documentation
• Description of Level 3 data products

[hayesla]

I guess we only support EVE/ESP level 0 and 1, ESP is only timeseries and doesn't deal with spectra - EVE/MEGS which is a bit more complicated but would be great to do!

[dstansby]

Should this go in the new instrument package instead of core?

[wtbarnes]

Maybe? This goes back to the question of what the responsibility of core is though.

We definitely don't want to provide specific analysis tools for this data. But I think we should be providing at least a way to download and read in the data into some core, albeit maybe generic, data structure.

To @hayesla's point though, I guess this would necessitate better support for spectra which we certainly don't have at the moment.

[Cadair]

I believe that @jmason86 and others at LASP are working on stuff related to this, so we should coordinate with them.

[jmason86]

"working on" is generous. We have plans to do so and are proposing a NASA HDEE to get all of the LASP hosted solar spectral irradiance data accessible from sunpy through Fido. It'll likely be analogous to the VSO or JSOC classes that are there now (LASP's is called LISIRD and the API is called LaTiS). We're planning to leverage @wafels ongoing HDEE work to establish a spectral container / data structure / what-have-you. HDEE proposals this year are due July 1 so this month we should have a clearer picture of how we may accomplish this, but the work won't actually start for several months.

[wtbarnes]

That's great to hear. I'll go ahead and keep this open and perhaps we can break it into more specific issues as things progress.