Find out if MDI synoptic maps exist

[dstansby]

In theory MDI synoptic magnetograms might exist somewhere, but they don't seem to be on JSOC: http://jsoc.stanford.edu/MDI/MDI_Magnetograms.html. If anyone knows where to get them, please post below!

[STBadman]

There are synoptic map fits files indexed by carrington rotation with filenames :

mdi.synoptic_mr_small_96m.1914 where the last 4 numbers are the carrington rotation in question

The sunpy jsoc client can find them, and they're already accessible via sunpy.net.Fido!

The only hiccup is that they don't appear to have valid start or endtimes (given they are referenced only by carrington rotation number) so the Fido.search command returns all the maps regardless of the a.Time attribute, so the Fido.fetch call should specify this by indexing the parfive.Results instance.

Here is a snippet which downloads all the mdi synoptic maps to `~/sunpy/data/

from sunpy.net import Fido,attrs as a
res = Fido.search(a.Time('2002-11-06T00:00:00', '2002-11-07T00:00:00'),  
                  a.jsoc.Series('mdi.synoptic_Mr_small_96m'),  
                  a.jsoc.Notify('samuel_badman@berkeley.edu')
                 )  
downloaded_files = Fido.fetch(res)

[dstansby]

Yeah, the JSOC bug is fixed in SunPy 2.0 (released soon!). As with HMI (see https://github.com/dstansby/pfsspy/pull/161/files) maybe it's possible to search by Carrington rotation too.