sia-example.vor

<resource xsi:type="vstd:ServiceStandard" status="active"
          created="2000-01-01T09:00:00" updated="2000-01-01T09:00:00"
          xmlns:vstd="http://www.ivoa.net/xml/StandardsRegExt/v1.0"
          xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" 
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.ivoa.net/xml/VODataService/v1.1
            http://www.ivoa.net/xml/VODataService/v1.1">

    <title>   Simple Image Access Protocol   </title>
    <shortName>   SIA   </shortName>
    <identifier>   ivo://ivoa.net/std/SIA   </identifier>

    <curation>
      <publisher ivo-id="ivo://ivoa.net/IVOA">
        International Virtual Observatory Alliance
      </publisher>
      <creator>
        <name>  Doug Tody   </name>
      </creator>
      <creator>
        <name>  Ray Plante   </name>
      </creator>
      <date>   2004-05-24   </date>
      <contact>
        <name>   Data Access Layer Working Group   </name>
  <email>  dal@ivoa.net    </email>
      </contact>
    </curation>

    <content>
      <subject>   software standard   </subject>
      <subject>   virtual observatory   </subject>
      <description>
        The Simple Image Access Protocol is a protocol for retrieving
        image data from a variety of astronomical image repositories
        through a uniform interface. The interface is meant to be
        reasonably simple to implement by service providers. A query
        defining a rectangular region on the sky is used to query for
        candidate images. The service returns a list of candidate
        images formatted as a VOTable. For each candidate image an
        access reference URL may be used to retrieve the image. Images
        may be returned in a variety of formats including FITS and
        various graphics formats. Referenced images are often computed
        on the fly, e.g., as cutouts from larger images. 
      </description>
      <referenceURL>
         http://www.ivoa.net/Documents/latest/SIA.html
      </referenceURL>
      <type>   Other   </type>
      <contentLevel>   Research   </contentLevel>
    </content>

    <endorsedVersion status="rec"> 1.0 </endorsedVersion>

    <interface xsi:type="vs:ParamHTTP" role="std" version="1.0">
       <accessURL use="base"> http://sample.org/cgi-bin/sia </accessURL>
       <queryType>GET</queryType>
       <resultType>text/xml+votable</resultType>

       <!-- 
         -  These are the standard input parameters defined in the 
         -  SIA spec
         -->
       <param use="required">
         <name>POS</name>
         <description>
            Search Position in the form "ra,dec" where ra and dec are given 
            in decimal degrees in the ICRS coordinate system.
         </description>
         <unit>degrees</unit>
         <dataType arraysize="2">real</dataType>
       </param>
       <param use="required">
         <name>SIZE</name>
         <description>
            Size of search region in the RA and Dec. directions in decimal 
            degrees.
         </description>
         <unit>degrees</unit>
         <dataType arraysize="2">real</dataType>
       </param>
       <param use="optional">
         <name>FORMAT</name>
         <description>Requested format of images.</description>
         <dataType>string</dataType>
       </param>
       <param use="optional">
         <name>INTERSECT</name>
         <description>
           Choice of intersection of matched images with the region of 
           interest.
         </description>
         <dataType>string</dataType>
       </param>
       <param use="ignored">
         <name>NAXIS</name>
         <description>
           The number of pixels desired along each axis
         </description>
         <dataType arraysize="2">integer</dataType>
       </param>
       <param use="ignored">
         <name>CFRAME</name>
         <description>
           the coordinate frame to impose on the image.
         </description>
         <dataType>string</dataType>
       </param>
       <param use="ignored">
         <name>EQUINOX</name>
         <description>
           the epoch of the mean equator and equinox for the specified 
           coordinate system reference frame (CFRAME). coordinate frame to 
           impose on the image.
         </description>
         <dataType>string</dataType>
       </param>
       <param use="ignored">
         <name>CRPIX</name>
         <description>
           the pixel position to locate the reference position in the output
           image.
         </description>
         <dataType arraysize="2">real</dataType>
       </param>
       <param use="ignored">
         <name>CRVAL</name>
         <description>
           the world coordinates of the reference position in the output
           image in decimal degrees
         </description>
         <dataType arraysize="2">real</dataType>
       </param>
       <param use="ignored">
         <name>CDELT</name>
         <description>
           the scale of the output image in decimal degrees per pixel
         </description>
         <dataType arraysize="2">real</dataType>
       </param>
       <param use="ignored">
         <name>ROTANG</name>
         <description>
           the rotation angle to put into the coordinate system of the output
           image
         </description>
         <dataType arraysize="2">real</dataType>
       </param>
       <param use="ignored">
         <name>PROJ</name>
         <description>
           the projection to impose in the construction of the output image
         </description>
         <dataType>string</dataType>
       </param>
       <param use="ignored">
         <name>VERB</name>
         <description>
           the level of verbosity in the output.
         </description>
         <dataType>string</dataType>
       </param>
    </interface>
   
</resource>