Here are the parts of the initial mesages from Doug Tody and Tim Cornwell containing background information, copied from the original radio-vo list hosted by http://listmgr.cv.nrao.edu/mailman/listinfo/radiovo:
FROM
Doug Tody dtody-at-nrao.edu
Mon, 6 Jan 2003 11:05:55 -0700 (MST)
Here is a brief update on what we have been up to over the past month at NRAO. This work was done as part of the US VO effort. Conesearch and simple image access represent initial attempts to provide uniform services for catalog and image data discovery and access. These services provide a simple but useful means to get some data online quickly using a uniform interface, and were used to build the phase 1 prototype VO applications. A number of catalog and image data collections have already been been put up using these interfaces. Details can be found on the US VO web site at http://www.us-vo.org.
We have cone search services up for testing now for the NVSS and FIRST object catalogs. We haven't registered them yet, but will do so next week. We are in the process of adding the WENSS catalog as well, and should have this up shortly. We also have some AIPS++ client-side code to interface to these services, and we will be using the services for actual data processing within AIPS++, not just for demos! We are working on some SIM services as well, but those won't be available until after the AAS. The VO services will represent the first public usage of the NRAO archive, which is just now starting to come together.
A web page providing access to the conesearch services is available at
http://www.aoc.nrao.edu/e2e/java/vocone.html
Some sample queries:
http://www.aoc.nrao.edu/e2e/java/FIRSTConeSearchServlet?RA=10.6&DEC=0.0&SR=0.2
http://www.aoc.nrao.edu/e2e/java/NVSSConeSearchServlet?RA=20&DEC=45&SR=0.5
We developed these using Java servlets running in Apache Tomcat, which will make it easy for us to add a Web service front end later.
FROM
Tim Cornwell tcornwel-at-nrao.edu
As a followup to Doug's message, I'd like to mention one of our AIPS++ tools for working with a conesearch. The cscatalog tool enables one to convert answers from particular conesearches into AIPS++ componentlists. See the following link:
http://aips2.nrao.edu/daily/docs/user/VO/node10.html#conesearch:cscatalog
The overlay in the image shown was generated from a conesearch to a server at NRAO. We expect to develop similar tools e.g. a tool to low cleaning of low frequency images by generating clean masks from catalogs. Received on 2003-02-13Z18:30:33