derriere at newb6.u-strasbg.fr
Mon Sep 18 06:34:52 PDT 2006
Alberto Micol wrote:
> Help: I thought the ucd for the target name was under the obs. tree,
> but I cannot find it. What is it?
> In the old days was: ID_TARGET, but now? Was it removed?
The UCD for the target name is simply meta.id
(meta.id;src if you want to be very precise).
(see the tools: http://vizier.u-strasbg.fr/UCD/tools.htx )
> > Other heuristics that could be used....
> > If a number is signed and it is not the first field, it must be
> > the start
> > of the second coordinate.
> One way would be to enforce the sign for the second coordinate as a
> recognised separator, but please...
Indeed, the sign can be a very useful separator between the
two coordinate components. I think we should encourage the use of
+/- in any recommended format.
Interestingly enough, for earth geography, the ISO 6709 standard
requires the sign for both longitude and latitude:
But there is NO other separator... quite different from common use
in astronomy, so I'm not pretending this is the way to go for IVOA.
/ ~ /, Sebastien Derriere mailto:derriere at astro.u-strasbg.fr
/ ~~~~ // Observatoire de Strasbourg Phone +33 (0) 390 242 444
/______// 11, rue de l'universite Telefax +33 (0) 390 242 417
(______(/ F-67000 Strasbourg France
More information about the dm