[obs-tap]observable quantities in observations and their UCDs

[Igor Chilingarian]

Hi Mireille,

As I already mentioned in our discussion here at CDS, I do not think that 
"velocity" is observable in any sense. I would agree that it can be a spectral 
coordinate, but we NEVER directly observe velocities. Velocities are results 
of the [model-dependent] data analysis.

With best regards,
 						Igor

On Thu, 17 Jun 2010, Mireille Louys wrote:

> Dear DM members,
>
> At the last interop in Victoria, we decided to build
> up a list of observable quantities that are measured in an observation
> and to attach to it a proper Ucd. These will be the observables
> considered for the Obs/Tap specification .
>
> I gathered material from the Polarisation Note and Interferometry note by 
> Anita.
> I included items from Francois's observable list.
>
> Please find here a table to start with for this.
>
> Thanks for your inputs, comments and corrections.
>
> Best regards, Mireille
>
>