On Thu, 27 May 2010, Colin Aspin wrote:
> Which version of gaia are you using? My lehuakona version doesn't have
> a "Query VO catalog server" entry...
Hawakii or any update since then has this.
> On May 27, 2010, at 5:00 PM, Peter W. Draper wrote:
>
> > On Thu, 27 May 2010, Colin Aspin wrote:
> >
> >> Anyone know how to get gaia to display IRAS error ellipses of the
> >> correct size/orientation? I can search for IRAS source from the ESO
> >> catalog but there doesn't seem to be an obvious way to plot them as
> >> ellipses with the correct angle.
> >
> > Hi Colin,
> >
> > it is going to be tricky without the error ellipse size and
> > orientation
> > columns. I did find a LEDAS catalogue in the VO query lists that
> > returned
> > these, so you can then define a plot symbol, so you could also try
> > that,
> > but it might be better to save to a local catalogue as the plot
> > symbols
> > are not persistent between sessions.
> >
> > The LEDAS catalogue can be found at: Data->Servers->"Query a VO
> > catalogue server". Now enter "IRAS" in Substring entry and press
> > "Query:".
> > Scroll down until you see:
> >
> > "IRASPSC: IRAS Point Source Catalog Version 2.0 (LEDAS)"
> >
> > select that field and press "Open". In the new window press "Query".
> > You
> > are now free to define a plot symbol (Options->set plot symbols...)
> > in terms of the "$error_semi_maj_axis" etc columns. Pick the ellipse
> > shape and set the ratio (major/minor) orientation and size (major).
> >
> > As I said you might want to save the catalogue at this point so you
> > can
> > open it as a local catalogue and keep the plotting symbols.
> >
> > Cheers,
> >
> > Peter.
>
--
Peter W. Draper, http://astro.dur.ac.uk/~pdraper
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