<?xml version='1.0'?><?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?><ri:Resource created="2012-07-23T16:00:00Z" status="active" updated="2024-12-27T08:31:06Z" version="1.2" xmlns:g-colstat="http://dc.g-vo.org/ColStats-1" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vg="http://www.ivoa.net/xml/VORegistry/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://dc.g-vo.org/ColStats-1 http://vo.ari.uni-heidelberg.de/docs/schemata/Colstats.xsd http://www.ivoa.net/xml/RegistryInterface/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/RegistryInterface.xsd http://www.ivoa.net/xml/VORegistry/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VORegistry.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Potsdam Kapteyn Plates Web Service</title><shortName>Kayteyn Web</shortName><identifier>ivo://org.gavo.dc/kapteyn/q/web</identifier><curation><publisher>The GAVO DC team</publisher><creator><name>Tsvetkov, M</name></creator><creator><name>Tsvetkova, K.</name></creator><creator><name>Demleitner, M.</name></creator><date role="Updated">2026-01-16T10:24:08Z</date><contact><name>GAVO Data Centre Team</name><address>Mönchhofstrasse 12-14, D-69120 Heidelberg</address><email>gavo@ari.uni-heidelberg.de</email><telephone>+49 6221 54 1837</telephone></contact></curation><content><subject>history-of-astronomy</subject><subject>astrophotography</subject><subject>kapteyn-selected-areas</subject><description>
In the context of Kapteyn's plan to obtain a photometric standard, in
Potsdam more than 400 photographic plates of several Selected Areas,
Special Areas, and Kapteyn-Pritchard areas were obtained between 1910 and
1933, both as direct images and with an object prism.  This service
provides FITS images of the science area of the plates as well as images of
the entire plates, including previous markings.</description><source format="bibcode">1963ASPL....9...89L</source><referenceURL>https://dc.g-vo.org/kapteyn/q/web/info</referenceURL><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://org.gavo.dc/__system__/obscore/obscore">GAVO Data Center Obscore</relatedResource><relatedResource ivo-id="ivo://org.gavo.dc/tap">GAVO Data Center TAP service</relatedResource><relatedResource ivo-id="ivo://org.gavo.dc/hppunion/q/im">Historical Photographic Plate Image Archive</relatedResource></relationship></content><rights rightsURI="https://spdx.org/licenses/CC-BY-4.0.html">Kapteyn series plate scans is licensed under the `Creative Commons Attribution 4.0 License &lt;http://creativecommons.org/licenses/by/4.0/&gt;`_

.. image:: /static/img/ccby.png
   :alt: [CC-BY]

</rights><rights>
Kapteyn series plate scans is licensed under the `Creative Commons Attribution 4.0 License &lt;http://creativecommons.org/licenses/by/4.0/&gt;`_

.. image:: /static/img/ccby.png
   :alt: [CC-BY]



Support for scanning the plates and obtaining metadata was
provided by DFG grant STE 710-6-1.  We gratefully acknowledge
support  by Leibniz-Institut für Astrophysik Potsdam and
the Bulgarian Academy of Sciences.</rights><capability standardID="ivo://ivoa.net/std/SODA#sync-1.0"><interface role="std" xsi:type="vs:ParamHTTP"><accessURL use="base">http://dc.g-vo.org/kapteyn/q/dl/dlget</accessURL><mirrorURL>https://dc.g-vo.org/kapteyn/q/dl/dlget</mirrorURL></interface></capability><capability standardID="ivo://ivoa.net/std/DataLink#links-1.1"><interface role="std" xsi:type="vs:ParamHTTP"><accessURL use="base">http://dc.g-vo.org/kapteyn/q/dl/dlmeta</accessURL><mirrorURL>https://dc.g-vo.org/kapteyn/q/dl/dlmeta</mirrorURL><queryType>GET</queryType><resultType>application/x-votable+xml;content=datalink</resultType><param std="true"><name>ID</name><description>The publisher DID of the dataset of interest</description><ucd>meta.id;meta.main</ucd><dataType arraysize="*" xsi:type="vs:SimpleDataType">char</dataType></param><param std="true"><name>responseformat</name><description>File format requested for output.</description><ucd>meta.code.mime</ucd><dataType arraysize="*" xsi:type="vs:SimpleDataType">char</dataType></param><param std="true"><name>maxrec</name><description>Maximum number of records returned. Pass 0 to retrieve service parameters.</description><dataType xsi:type="vs:SimpleDataType">integer</dataType></param><param std="true"><name>verb</name><description>Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns.</description><dataType xsi:type="vs:SimpleDataType">integer</dataType></param></interface></capability><facility>Astrophysikalisches Observatorium Potsdam (42)</facility><instrument>80cm Great Refractor</instrument><instrument>Zeiss Triplet 15 cm Potsdam-Telegrafenberg</instrument><coverage><spatial>2/0,75,103,119,124
3/4-6,8-9,65-68,72,129,131-132,136-137,194-195,197-198,200-202,224-225,283,286-287,305,307-310,312-313,343,347,350-351,364-365,367,369,371-373,376-377,423,429,431,433-436,440,467,471,473,475,491,494-495,500-502,504
4/40-42,44,48,64,128,258-259,276-278,280-282,292-294,296-298,521-523,532-534,536-538,552-554,556,770,773-775,785-786,812,814,816,832,904-905,907-910,914,1111,1131,1141-1143,1191,1226-1227,1244,1256-1258,1260,1264,1367,1387,1397-1399,1435,1438,1465-1467,1473,1482-1483,1496-1498,1512-1514,1516,1627,1630,1689-1691,1713,1721-1723,1731,1748-1750,1752-1754,1764-1766,1769-1770,1867,1879,1882,1889,1891,1897,1899,1959,1963,1973-1975,2020-2022,2024-2026,2032</spatial><temporal>18867 27155</temporal><spectral>3.82009e-19 5.22749e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://dc.g-vo.org/kapteyn/q/web/coverage</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>kapteyn</name><title>Potsdam Kapteyn Series Plates</title><description>
In the context of Kapteyn's plan to obtain a photometric standard, in
Potsdam more than 400 photographic plates of several Selected Areas,
Special Areas, and Kapteyn-Pritchard areas were obtained between 1910 and
1933, both as direct images and with an object prism.  This service
provides FITS images of the science area of the plates as well as images of
the entire plates, including previous markings.</description><table type="output"><name>output</name><description>
In the context of Kapteyn's plan to obtain a photometric standard, in
Potsdam more than 400 photographic plates of several Selected Areas,
Special Areas, and Kapteyn-Pritchard areas were obtained between 1910 and
1933, both as direct images and with an object prism.  This service
provides FITS images of the science area of the plates as well as images of
the entire plates, including previous markings.</description><column><name>_r</name><description>Distance to the search center</description><unit>deg</unit><ucd>pos.distance</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>accref</name><description>Access key for the data</description><ucd>meta.ref.url</ucd><utype>Access.Reference</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>accsize</name><description>Size of the data in bytes</description><unit>byte</unit><ucd>VOX:Image_FileSize</ucd><utype>Access.Size</utype><dataType xsi:type="vs:VOTableType">long</dataType><flag>nullable</flag></column><column><name>datalink</name><description>URL of a datalink document for this dataset.</description><ucd>meta.ref.url</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>acc4</name><description>Original plate scaled to 25%.</description><ucd>meta.ref.url</ucd><utype>Access.Reference</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>dateobs</name><description>Epoch at midpoint of observation</description><unit>d</unit><ucd>time;obs.exposure</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>centeralpha</name><description>Approximate center of image, RA</description><unit>deg</unit><ucd>pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>centerdelta</name><description>Approximate center of image, Dec</description><unit>deg</unit><ucd>pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>object</name><description>Special object on plate.</description><ucd>meta.id</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>wfpdb_id</name><description>Plate identifier as in the WFPDB.</description><ucd>meta.id</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>imagetitle</name><description>Synthetic name of the image</description><ucd>meta.title</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>instid</name><description>Identifier of the originating instrument</description><ucd>meta.id;instr</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>exposure</name><description>Effective exposure time.</description><unit>s</unit><ucd>time.duration;obs.exposure</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>platephoto</name><description>Image of the plate including border and other markings.</description><ucd>meta.ref.url</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column></table></schema></tableset></ri:Resource>