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Dear HiPS partners, developers & Cie.<br>
<br>
After a long debate, a lot of ideas, and some mail exchanges with
Markus Deimleitner (Registry Working Group chair), we have converged
to this solution for HiPS identication mechanism and HiPS VO
registry declaration. <br>
<br>
Here the result of the discussion:<br>
<ol>
<li><font color="#006600">The IVOA HiPS standard will recommend to
use a <b>valid IVOID identifier</b> for any generated HiPS,
for instance <b>ivo://authority_id?obs_id</b> <i>(ex:
ivo://CDS?P/DSS2/color)</i> with the constraint to declare
ASAP the authority_id in the VO registry if it is not yet the
case;<br>
otherwise the HiPS will be generated under the identifier<b>
ivo://UNKNOWN_AUTH?randomNumber</b> (with a big warning...)<br>
</font></li>
<li><font color="#006600">This identifier will be stored in the
HiPS properties file under the <b>creator_did</b> keyword;</font></li>
<li><font color="#006600">Independently, any HiPS provider can -
if they want - declare in the VO registry:</font></li>
<ol>
<li><font color="#006600">Their HiPS server(s) = HTTP service which
publishes several HiPS : must provide their HiPS list =>
see example A below;<br>
</font></li>
<li><font color="#006600">Each individual HiPS => see example
B below.<br>
</font></li>
</ol>
</ol>
<p>This pragmatic solution has been elaborated:<br>
</p>
<ul>
<li>to have a simple and robust technical solution for allowing
identification, selection, discovering and mirroring mechanisms
for HiPS;</li>
<li>to use valid IVOIDs (compatible with PR registry doc) rather
than invent a new parallel identication mechanism;</li>
<li>to let the freedom of HiPS provider to declare or not in the
VO registry their HiPS, or their HiPS servers;<br>
</li>
<li>to garantee the uniqueness of each HiPS identifier (based on
HiPS creators on not on HiPS publishers).</li>
</ul>
<p>The impact on the already existing HiPS should be as lite as
possible. I will provide soon to all HiPS partners (servers and
clients) a recipe and a calendar for the migration of previous
identication scheme to the new one. We need to synchronize this
migration for avoiding potential HiPS duplications (TB of data)
due to the mirror HiPS mechanism.<br>
</p>
<p>Best regards<br>
Pierre Fernique<br>
</p>
<p><br>
<b>Example A - HiPS server declaration</b><br>
</p>
<p><tt><ri:Resource xmlns:(...) <font color="#3333ff">xsi:type="vr:Service"</font>></tt><tt><br>
</tt><tt> <title>CDS HiPS Service (master
server)</title></tt><tt><br>
</tt><tt> <shortName>CDS hipsmaster</shortName></tt><tt><br>
</tt><tt>
<identifier>ivo://CDS/hipsmaster</identifier></tt><tt><br>
</tt><tt> <curation></tt><tt><br>
</tt><tt> <publisher>CDS</publisher></tt><tt><br>
</tt><tt> <creator></tt><tt><br>
</tt><tt> <name>Centre de Donnees astronomiques de
strasbourg</name></tt><tt><br>
</tt><tt> </creator></tt><tt><br>
</tt><tt> <contact></tt><tt><br>
</tt><tt> <name>CDS Helpdesk</name></tt><tt><br>
</tt><tt> <email><a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:cds-question@unistra.fr">cds-question@unistra.fr</a></email></tt><tt><br>
</tt><tt> </contact></tt><tt><br>
</tt><tt> </curation></tt><tt><br>
</tt><tt> <content></tt><tt><br>
</tt><tt> <subject>CDS Hierarchical Progressive
Surveys</subject></tt><tt><br>
</tt><tt> <description>The CDS provides a large
collection of reference surveys and catalogs</tt><tt><br>
</tt><tt> available thanks to Hierarchical Progressive
Survey protocol...</description></tt><tt><br>
</tt><tt> <referenceURL><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://alasky.u-strasbg.fr/hipslist">http://alasky.u-strasbg.fr/hipslist</a></referenceURL></tt><tt><br>
</tt><tt> <type>Archive</type></tt><tt><br>
</tt><tt> <contentLevel>Research</contentLevel></tt><tt><br>
</tt><tt> </content></tt><tt><br>
</tt><font color="#3333ff"><tt> <capability standardID="<b>ivo://ivoa.net/std/hips#hipslist-1.0</b>"></tt><tt><br>
</tt><tt> <interface role="std"
xsi:type="vs:ParamHTTP"></tt><tt><br>
</tt><tt> <accessURL use="base"><a
class="moz-txt-link-freetext"
href="http://alasky.u-strasbg.fr/hipslist"><a class="moz-txt-link-freetext" href="http://alasky.u-strasbg.fr/hipslist">http://alasky.u-strasbg.fr/hipslist</a></a></accessURL></tt><tt><br>
</tt><tt> </interface></tt><tt><br>
</tt><tt> </capability></tt><tt><br>
</tt></font><tt></ri:Resource></tt><tt><br>
</tt><tt><br>
</tt></p>
<p><b>Example B - HiPS individual declaration</b><b><br>
</b></p>
<p><tt> <ri:Resource xmlns:(...) xsi:type="vs:CatalogService"></tt><tt><br>
</tt><tt> <title>ALADIN image DSS2 blue survey
collection</title></tt><tt><br>
</tt><tt> <shortName>Aladin DSS2 blue</shortName></tt><tt><br>
</tt><tt>
<identifier>ivo://CDS/P/DSS2/blue</identifier></tt><tt><br>
</tt><tt> <curation></tt><tt><br>
</tt><tt> <publisher>CDS</publisher></tt><tt><br>
</tt><tt> <creator></tt><tt><br>
</tt><tt> <name>Centre de Donnees astronomiques de
strasbourg</name></tt><tt><br>
</tt><tt> </creator></tt><tt><br>
</tt><tt> <contact></tt><tt><br>
</tt><tt> <name>CDS Helpdesk</name></tt><tt><br>
</tt><tt> <email><a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:cds-question@unistra.fr">cds-question@unistra.fr</a></email></tt><tt><br>
</tt><tt> </contact></tt><tt><br>
</tt><tt> </curation></tt><tt><br>
</tt><tt> <content></tt><tt><br>
</tt><tt> <subject>ALADIN image DSS2 blue survey
collection</subject></tt><tt><br>
</tt><tt> <description>The ALADIN image server provides
reference ... </description></tt><tt><br>
</tt><tt> <referenceURL><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://aladin.u-strasbg.fr">http://aladin.u-strasbg.fr</a></referenceURL></tt><tt><br>
</tt><tt> <type>Survey</type></tt><tt><br>
</tt><tt> <contentLevel>Research</contentLevel></tt><tt><br>
</tt><tt> </content></tt><tt><br>
</tt><font color="#3333ff"><tt> <capability standardID="<b>ivo://ivoa.net/std/hips#hips-1.0</b>"></tt><tt><br>
</tt><tt> <interface role="std"
xsi:type="vs:ParamHTTP"></tt><tt><br>
</tt><tt> <accessURL use="base"><a
class="moz-txt-link-freetext"
href="http://alasky.u-strasbg.fr/DSS/DSS2-blue-XJ-S"><a class="moz-txt-link-freetext" href="http://alasky.u-strasbg.fr/DSS/DSS2-blue-XJ-S">http://alasky.u-strasbg.fr/DSS/DSS2-blue-XJ-S</a></a></accessURL></tt><tt><br>
</tt><tt> </interface></tt><tt><br>
</tt><tt> <interface role="std"
xsi:type="vs:ParamHTTP"></tt><tt><br>
</tt><tt> <accessURL use="base"><a
class="moz-txt-link-freetext"
href="http://alaskybis.u-strasbg.fr/DSS/DSS2-blue-XJ-S"><a class="moz-txt-link-freetext" href="http://alaskybis.u-strasbg.fr/DSS/DSS2-blue-XJ-S">http://alaskybis.u-strasbg.fr/DSS/DSS2-blue-XJ-S</a></a></accessURL></tt><tt><br>
</tt><tt> </interface></tt><tt><br>
</tt><tt> <interface role="std"
xsi:type="vs:ParamHTTP"></tt><tt><br>
</tt><tt> <accessURL use="base"><a
class="moz-txt-link-freetext"
href="http://healpix.ias.u-psud.fr/DSS2Blue"><a class="moz-txt-link-freetext" href="http://healpix.ias.u-psud.fr/DSS2Blue">http://healpix.ias.u-psud.fr/DSS2Blue</a></a></accessURL></tt><tt><br>
</tt><tt> </interface></tt><tt><br>
</tt><tt> </capability></tt><tt><br>
</tt></font><tt><tt> <capability
standardID="ivo://ivoa.net/std/SIA"
xsi:type="sia:SimpleImageAccess"></tt><tt><br>
</tt><tt> <interface role="std"
xsi:type="vs:ParamHTTP"></tt><tt><br>
</tt><tt> <accessURL use="base"><a
class="moz-txt-link-freetext"
href="http://aladin.u-strasbg.fr/cgi-bin/SIA-DSS2blue"><a class="moz-txt-link-freetext" href="http://aladin.u-strasbg.fr/cgi-bin/SIA-DSS2blue">http://aladin.u-strasbg.fr/cgi-bin/SIA-DSS2blue</a></a></accessURL></tt><tt><br>
</tt><tt> <queryType>GET</queryType></tt><tt><br>
</tt><tt> </interface></tt><tt><br>
</tt><tt> </capability></tt><tt><br>
</tt> <coverage></tt><tt><br>
</tt><tt> <footprint ivo-id="ivo://mocivod"></tt><tt><br>
</tt><tt> <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://alasky.u-strasbg.fr/DSS/DSS2-blue-XJ-S/Moc.fits">http://alasky.u-strasbg.fr/DSS/DSS2-blue-XJ-S/Moc.fits</a></tt><tt><br>
</tt><tt> </footprint></tt><tt><br>
</tt><tt> </coverage></tt><tt><br>
</tt><tt> </ri:Resource></tt><tt><br>
<br>
</tt>The same kind of declaration but for a HiPS table access to a
VizieR catalog. Similarly to CS capabilities, we will have HiPS
capabilities (one for each tables) :<br>
<tt><br>
<ri:Resource xmlns:ri="(...) xsi:type="vs:CatalogService"><br>
<title>The Magellanic Catalogue of Stars - MACS
(Tucholke+ 1996)</title><br>
<shortName>I/221</shortName><br>
<identifier>ivo://CDS.VizieR/I/221</identifier><br>
<curation><br>
<publisher ivo-id="ivo://CDS">CDS</publisher><br>
<creator><br>
<name>Tucholke H.-J., de Boer K.S., Seitter
W.C.</name><br>
</creator><br>
<contributor>Hans-Joachim Tucholke [Univ.
Bonn]</contributor><br>
<date
role="creation">1997-12-09T15:08:34</date><br>
<version>20-Nov-1995</version><br>
<contact><br>
<name>CDS support team</name><br>
<address>CDS, Observatoire de Strasbourg, <br>
11 rue de l'Universite, F-67000 Strasbourg,
France</address><br>
<email><a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:cds-question@unistra.fr">cds-question@unistra.fr</a></email><br>
</contact><br>
</curation><br>
<content><br>
<subject>Positional_Data</subject><br>
<description>The Magellanic Catalogue of Stars
(MACS) is based on scans of <br>
ESO Schmidt plates and contains about 244,000 stars
covering large areas around the <br>
LMC and the SMC. The limiting magnitude is
B&lt;16.5m and the positional accuracy <br>
is better than 0.5" for 99% of the stars. The stars of
this catalogue were <br>
screened interactively to ascertain that they are
undisturbed by close neighbours. <br>
</description><br>
<source
format="bibcode">1996A&amp;AS..119...91T</source><br>
<referenceURL><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://cdsarc.u-strasbg.fr/cgi-bin/Cat?I/221">http://cdsarc.u-strasbg.fr/cgi-bin/Cat?I/221</a></referenceURL><br>
<type>Catalog</type><br>
<contentLevel>Research</contentLevel><br>
</content><br>
<rights>public</rights><br>
<capability><br>
<interface xsi:type="vr:WebBrowser"> <br>
<accessURL use="full"><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://vizier.u-strasbg.fr/cgi-bin/VizieR-2?-source=I/221">http://vizier.u-strasbg.fr/cgi-bin/VizieR-2?-source=I/221</a></accessURL><br>
</interface><br>
</capability><br>
<capability><br>
<interface xsi:type="vs:ParamHTTP"> <br>
<accessURL use="base"><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://vizier.u-strasbg.fr/viz-bin/votable/-dtd/-A?-source=I/221">http://vizier.u-strasbg.fr/viz-bin/votable/-dtd/-A?-source=I/221</a></accessURL><br>
<queryType>GET</queryType><br>
<resultType>text/xml+votable</resultType><br>
</interface><br>
</capability><br>
<capability standardID="ivo://ivoa.net/std/ConeSearch"
xsi:type="cs:ConeSearch"> <br>
<description>Cone search capability for table
I/221/lmc (The Large Magellanic Cloud)</description><br>
<interface role="std"
xsi:type="vs:ParamHTTP"> <br>
<accessURL use="base"><br>
<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&amp;-source=I%2F221%2Flmc&amp">http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&amp;-source=I%2F221%2Flmc&amp</a>;<br>
</accessURL><br>
<queryType>GET</queryType><br>
<resultType>text/xml+votable</resultType><br>
</interface><br>
<maxSR>180</maxSR><br>
<maxRecords>9999</maxRecords><br>
<verbosity>true</verbosity><br>
<testQuery><br>
<ra>83.85245901639344</ra><br>
<dec>-77.43420059769218</dec><br>
<sr>0.028629053431811713</sr><br>
</testQuery><br>
</capability><br>
<capability standardID="ivo://ivoa.net/std/ConeSearch"
xsi:type="cs:ConeSearch"> <br>
<description>Cone search capability for table
I/221/smc (The Small Magellanic Cloud)</description><br>
<interface role="std"
xsi:type="vs:ParamHTTP"> <br>
<accessURL use="base"><br>
<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&amp;-source=I%2F221%2Fsmc&amp">http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&amp;-source=I%2F221%2Fsmc&amp</a>;<br>
</accessURL><br>
<queryType>GET</queryType><br>
<resultType>text/xml+votable</resultType><br>
</interface><br>
<maxSR>180</maxSR><br>
<maxRecords>9999</maxRecords><br>
<verbosity>true</verbosity><br>
<testQuery><br>
<ra>28.8031914893617</ra><br>
<dec>-77.0894323306314</dec><br>
<sr>0.028629053431811713</sr><br>
</testQuery><br>
</capability><br>
<font color="#3333ff"> <capability standardID="</font></tt><tt><font
color="#3333ff"><font color="#3333ff"><tt><b>ivo://ivoa.net/std/hips#hips-1.0</b></tt></font>"><br>
<interface role="std" xsi:type="vs:ParamHTTP"><br>
<accessURL use="base"><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://axel.u-strasbg.fr/HiPSCatService/I/221/lmc">http://axel.u-strasbg.fr/HiPSCatService/I/221/lmc</a></accessURL><br>
</interface><br>
</capability><br>
<capability standardID="</font></tt><tt><font
color="#3333ff"><font color="#3333ff"><tt><b>ivo://ivoa.net/std/hips#hips-1.0</b></tt></font>"><br>
<interface role="std" xsi:type="vs:ParamHTTP"><br>
<accessURL use="base"><a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://axel.u-strasbg.fr/HiPSCatService/I/221/smc">http://axel.u-strasbg.fr/HiPSCatService/I/221/smc</a></accessURL><br>
</interface><br>
</capability><br>
</font> <coverage><br>
<footprint ivo-id="ivo://mocivod"><br>
<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://alasky.u-strasbg.fr/footprints/cats/vizier/I/221?product=MOC&amp;nside=512">http://alasky.u-strasbg.fr/footprints/cats/vizier/I/221?product=MOC&amp;nside=512</a><br>
</footprint><br>
<waveband>Optical</waveband><br>
</coverage><br>
<table> <br>
<name>I/221/lmc</name><br>
<description>The Large Magellanic
Cloud</description><br>
(...)<br>
</table><br>
<table> <br>
<name>I/221/smc</name><br>
<description>The Small Magellanic
Cloud</description><br>
(...)<br>
</table><br>
</ri:Resource><br>
</tt></p>
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