<?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="2025-03-13T15:37:23Z" version="1.2" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/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://www.ivoa.net/xml/RegistryInterface/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/RegistryInterface.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:DataService"><title>Potsdam Kapteyn series datalink service</title><identifier>ivo://org.gavo.dc/kapteyn/q/dl</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/dl/info</referenceURL></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><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/dl/coverage</footprint><waveband>Optical</waveband></coverage></ri:Resource>