Re: SSAP clients for theoretical spectra

Hi

We have the same problem that you have. Here at LAEFF we have developed some services for theoretical spectra using TSAP (included as an appendix as a use case of SSAP). Some of them are available since some years ago, some others only months ago. You can take a look at some of them through VOSpec, through our web interface (http://laeff.inta.es/svo/theory/db2vo/html), via the TSAP interface that Miguel Cerviño talked about (http://www.laeff.inta.es/projects/svo/theory/tsap/) or directly asking for the format=metadata url.

The problems are:

• Only VOSpec has an interface to access those models.
• At a registry level the only way to register these services is a SSAP services. This mean that applications will query the services by position/object name and the services will never ask annything useful. There's no way to register them as TSAP, meaning that, even though the service conformes with SSAP specification, it does not answers to position queries and it needs a previous format=metadata query for finding the query parameters.

I thing that this lack of a proper way to register theoretical spectra services is very important. It makes these services almost invisible to the applications (as they wouldn't know how to find which ones are available). And maybe that is the reason why most application developers haven't felt the need to implement a way to access theoretical spectra services.

I'm really interested in any discusion about this subject.

Carlos Rodrigo

> To all architects and developers of SSAP clients:
>
> within the GAVO (German VO) project we implemented the
> simple spectra access protocol for synthetic spectra.
> When I started testing our
> service I noticed that most of the client tools do not
> support search for theoretical spectra but only query by
> position and time. So my question to the applications
> working group: Are there any plans or on-going discussions
> about including theoretical spectra?
> Or any client software I do not know yet? (The only one I
> know dealing with parameters for theoretical spectra is
> VOSpec.)
>
> Otherwise I suggest to take this aspect into account for
> further development.
>
> The base url of our SSAP service is:
>

http://vo.ari.uni-heidelberg.de/ssatr-0.01/ssatr?request=queryData&
> To get an impression what parameters theoretical spectra
> would typically use, you can look at our browser based
> interface (or contact me directly).
>
> http://vo.ari.uni-heidelberg.de/ssatr-0.01/TrSpectra.jsp
>
> (This service is supposed to comply with SSAP version
> 1.02. If you find anything non-conforming, please let me
> know. )
>
> Best regards,
> Ulrike Stampa, GAVO
>
Received on 2007-10-11Z12:48:19