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+ Discovering and accessing Polarisation data
Use case 3.8 is for discovery of data including polarization information.
Actually this use case has been reinforced by scientific needs of two
communities: radio astronomy and optical spectropolarimetry...
So how can we take into account this use case in ObsTAP?
I see three possible solutions:
I think a pol_states field with a Char.polAxis.enumeration UType would be the right addition. However, polarization is not always measured as direct Stokes parameters. Should we have an enumeration of the Stokes parameters present, of non-Stokes parameters, or of deducible Stokes parameters?
-- JuanDeDiosSantanderVela - 07 Mar 2011 | ||||||||
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> > | I agree, for example LL and RR data are not a Stokes type. Would it be simple to adopt Juan's solution, with an enumeration based on the FITS polarization axes labels (by code, not by number, i.e. I Q U V RR LL RL LR XX Y Y XY Y X POLI POLA UNDEF (see http://www.ivoa.net/Documents/Notes/Polarization/ which incidentally needs updating in the light of recent comments)? -- AnitaRichards - 08 Mar 2011 | |||||||
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