How to consume TAP and SIAP for lightcurve survey ?

[Laurent Michel]

Hi,

You can access ObsCore services directly from TapHandle.
There are at least 3 Obscore services which are accessible: CADC, GAVO and XCATDB:
1) go on http://saada.unistra.fr/taphandle/
2) type either cadc or gavo or http://xcatdb/2xmmidr3/tap in the node selector (not exclusive)
3) Open the IVOA schema and double click on the Obscore node. That will return the 10 first rows. Do more by using the query form.

Note that the current release of Taphandle cannot send one query to several nodes in one shot and merge the results, but I 
understand that this feature must be in the top list of the future developments.

Bye
Laurent

Le 18/01/2013 16:08, Markus Demleitner a écrit :
> Hi,
>
> On Thu, Jan 17, 2013 at 05:50:32PM +0100, Petr Skoda wrote:
>> I cannot find anything that would realize the idea of querying all
>> servers using obscore to make discovery as described in the
>> motivation of introducing the ObsTAP.
> That is, indeed, a major sore spot.  IMHO the main reason why an
> all-VO obscore search has not been implemented so far is that our
> registry infrastructure is, well, in fairly bad shape; also, the
> adoption of TAPRegExt (which defines how ObsCore support is declared)
> by operators could be better.
>
> Now, with the new RegTAP, you can at least fairly easily figure out
> what ObsCore servers are out there (and registred) -- basically, you
> send a query
>
> SELECT access_url
> FROM rr.interface
> NATURAL JOIN rr.capability
> NATURAL JOIN rr.res_detail
> WHERE standard_id='ivo://ivoa.net/std/tap'
>    AND detail_utype='vor:capability.datamodel.ivoid'
>    AND detail_value='ivo://ivoa.net/std/obscore-1.0'
>
> to a TAP service implementing the data model
> ivo://ivoa.net/std/regtap/vor (of which currently only
> http://dc.g-vo.org/tap is in the registry, but at least one more will
> appear as soon as we sort out DNS troubles in Potsdam).
>
> With this, I'd hope some TAP clients will adopt "Send-to-all-Obscore"
> soon; I personally think Michel Laurent's TAPHandle would be
> particularly well suited.  With STILTS' TAP library, adding some
> obscore querying to SPLAT would, I guess, not be too hard, either.
>
> [Vow: If nothing else pans out, I'll have all-obscore support in
> tapsh by the Heidelberg interop]
>
> That still leaves open the need for nice and efficient desktop
> applications for both cubes and lightcurves, of course.  Is anyone
> actively working on anything VO-enabled in these areas?
>
> Cheers,
>
>           Markus
>

-- 

---- Laurent MICHEL              Tel  (33 0) 3 68 85 24 37
      Observatoire de Strasbourg  Fax  (33 0) 3 68 85 24 32
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