SSAP and images

[Doug Tody]

Hi Anita -

SSAP and SIAP both return positions as type double.  I think you need to
address this at the level of applications integration.  (Also, this just
goes to show, that although we may know the type of an object, that doesn't
say much about what to do with it).

	- Doug


On Tue, 1 May 2007, Anita M. S. Richards wrote:

>
> Hi people,
>
> Today we were doing a demo at the E-Science North West open day in
> Manchester and someone asked 'can you display the positions of spectra on
> top of images'.  So I used AstroScope to get some spectra and images and
> sent an image to Aladin, and sent the SSAP VOTable to Aladin and TopCat.
> Two problems emerged:
>
> The position is given in decimal degrees but type is string.  If I change
> to float, TopCat will plot the positions.
>
> However, even then, Aladin will only offer to display it in a spectral
> tool - it won't plot the positions.
>
> Probably we ahve discussed this and there are good reasons for it not
> working? Or is it something to do with retrieving SSAP stuff via
> AstroScope? But otherwise, it seems easy to fix and would please users.
>
> Thanks
>
> Anita
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> Dr. Anita M. S. Richards, AstroGrid Astronomer
> MERLIN/VLBI National Facility, University of Manchester,
> Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL, U.K.
> tel +44 (0)1477 572683 (direct); 571321 (switchboard); 571618 (fax).
>