Experimenting with JAVOT

[Niall Gaffney]

I had similar problems.  I think the virtualsky.org has gone away (or at 
least I get connection refused when I try to go to www.virtualsky.org). 
 Which is an interesting problem with registries...keeping them up to 
date.  Should the registry do a periodic aliveness test on the services? 
 Should it also make sure that the service behaves correctly under 
certain failure conditions (e.g. RA out of range).  These will be things 
we will have to debate when that time comes (what is the responsability 
of the registry).

There are more than 8 catalogs offered though...the combobox with the 
list of services should have a scroll bar on the side as the list is 
rather large (50+).  Not all behave well though.  There are all of the 
services that are listed in the jhu conesearch registry 
(http://skyserver.pha.jhu.edu/VOConeProfile/).  

Niall

Markus Dolensky wrote:

>Hi Niall,
>
>I just tried your code on my Linux box and it worked fine.
>
>Harvesting data though isn't easy ;)
>
>Out of the 8 catalogs offered only NCSA returned data, even after
>manually adjusting the search radius to stay within "MaxSR" and
>overriding some default coordinates. 
>
>Maybe some of the services (web servers) are not public(?)
>The relevant terminal output is appended.
>
>Cheers,
>Markus
>
>+---
>| Markus Dolensky   Mailto:Markus.Dolensky at eso.org
>| AVO Senior System Engineer  Web: www.eso.org/avo
>| Voice: ++49 89 32006/261  Fax: ++49 89 32006/480
>+---
>
>
>
>
>1. Data Source: Messier
>
>Parsing VOTable from
>http://virtualsky.org/servlet/cover?CAT=messier&RA=185&DEC=16&SR=179&VERB=0
>No VOTable found
>http://virtualsky.org/servlet/cover?CAT=messier&RA=185&DEC=16&SR=179&VERB=0
>Last error is Cannot open URL:
>http://virtualsky.org/servlet/cover?CAT=messier&RA=185&DEC=16&SR=179&VERB=0
>Exception is: java.net.ConnectException: Connection refused
>
>2. Data Source: GSC221
>
>Parsing VOTable from
>http://chart.stsci.edu/GSCVO/GSC22VO.jsp?RA=20&DEC=10&SR=0.4&VERB=0
>No VOTable found
>http://chart.stsci.edu/GSCVO/GSC22VO.jsp?RA=20&DEC=10&SR=0.4&VERB=0
>Last error is XML parse error: org.xml.sax.SAXParseException: The
>element type "br" must be terminated by the matching end-tag "</br>".
>
>3. Data Source: HIP
>
>Parsing VOTable from
>http://chart.stsci.edu/GSCVO/HIPVO.jsp?RA=20&DEC=10&SR=3&VERB=0
>No VOTable found
>http://chart.stsci.edu/GSCVO/HIPVO.jsp?RA=20&DEC=10&SR=3&VERB=0
>Last error is XML parse error: org.xml.sax.SAXParseException: The
>element type "br" must be terminated by the matching end-tag "</br>".
>
>4. Data Source: GSC1
>
>Parsing VOTable from
>http://chart.stsci.edu/GSCVO/GSC1VO.jsp?RA=20&DEC=10&SR=1&VERB=0
>No VOTable found
>http://chart.stsci.edu/GSCVO/GSC1VO.jsp?RA=20&DEC=10&SR=1&VERB=0
>Last error is XML parse error: org.xml.sax.SAXParseException: The
>element type "br" must be terminated by the matching end-tag "</br>".
>
>5. Data Source: TYC
>
>Parsing VOTable from
>http://chart.stsci.edu/GSCVO/TYCVO.jspRA=20&DEC=10&SR=3&VERB=0
>No VOTable found
>http://chart.stsci.edu/GSCVO/TYCVO.jspRA=20&DEC=10&SR=3&VERB=0
>Last error is Cannot open URL:
>http://chart.stsci.edu/GSCVO/TYCVO.jspRA=20&DEC=10&SR=3&VERB=0
>Exception is: java.io.FileNotFoundException:
>http://chart.stsci.edu/GSCVO/TYCVO.jspRA=20&DEC=10&SR=3&VERB=0
>
>6. Data Source: NCSA ADIL
>
>Parsing VOTable from
>http://adil.ncsa.uiuc.edu/cgi-bin/vocone?survey=f&RA=20&DEC=10&SR=6&VERB=0
>returns 18 objects
>
>7. Data Source: Yale
>
>Parsing VOTable from
>http://virtualsky.org/servlet/cover?CAT=yale&RA=20&DEC=10&SR=6&VERB=0
>No VOTable found
>http://virtualsky.org/servlet/cover?CAT=yale&RA=20&DEC=10&SR=6&VERB=0
>Last error is Cannot open URL:
>http://virtualsky.org/servlet/cover?CAT=yale&RA=20&DEC=10&SR=6&VERB=0
>Exception is: java.net.ConnectException: Connection refused
>
>8. Data Source: DPOSS Plates
>
>Parsing VOTable from
>http://virtualsky.org/servlet/cover?CAT=dposszones&RA=20&DEC=10&SR=6&VERB=0
>No VOTable found
>http://virtualsky.org/servlet/cover?CAT=dposszones&RA=20&DEC=10&SR=6&VERB=0
>Last error is Cannot open URL:
>http://virtualsky.org/servlet/cover?CAT=dposszones&RA=20&DEC=10&SR=6&VERB=0
>Exception is: java.net.ConnectException: Connection refused
>  
>