<?xml version='1.0'?><?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?><ri:Resource created="2024-07-23T08:00:00Z" status="active" updated="2025-12-30T10:19:28Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" 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://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd 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>BGDS DR2 Matched Photometry Cone Search</title><shortName>BGDS2 median pho</shortName><identifier>ivo://org.gavo.dc/bgds/l2/matchedphot</identifier><altIdentifier>doi:10.21938/whiHSDPrL:m8cI6AWZ:CFg</altIdentifier><curation><publisher>The GAVO DC team</publisher><creator><name>Blex, J.</name></creator><creator><name>Hackstein, M.</name></creator><creator><name>Westhues, C.</name></creator><creator><name>Ramolla, M.</name></creator><creator><name>Demleitner, M.</name></creator><creator><name>Fein, C.</name></creator><creator><name>Chini, R.</name></creator><date role="Updated">2026-04-07T10:09:44Z</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>surveys</subject><subject>galaxy-planes</subject><subject>milky-way-galaxy</subject><subject>variable-stars</subject><subject>broad-band-photometry</subject><subject>time-domain-astronomy</subject><description> 
			Median photometry in U, B, V, z, r, and i
			broadbands as well as the narrow bands OIII, NB, Halpha and SII
			for particular objects; all measurements have been matched to the
			nearest Gaia DR3 object.

			For the raw measurements, see the bgds2.phot_all table and the
			medphot service.
	</description><source format="bibcode">2026AN....34770087B</source><referenceURL>https://dc.g-vo.org/bgds/l2/matchedphot/info</referenceURL><type>Survey</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsNewVersionOf</relationshipType><relatedResource ivo-id="ivo://org.gavo.dc/bgds/l/ssa">BGDS light curves DR1</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://org.gavo.dc/tap">GAVO Data Center TAP service</relatedResource></relationship></content><rights>
If you use GDS data, please cite
:bibcode:`2026AN....34770087B`.</rights><capability standardID="ivo://ivoa.net/std/conesearch" xsi:type="cs:ConeSearch"><interface role="std" xsi:type="vs:ParamHTTP"><accessURL use="base">http://dc.g-vo.org/bgds/l2/matchedphot/scs.xml?</accessURL><mirrorURL>https://dc.g-vo.org/bgds/l2/matchedphot/scs.xml?</mirrorURL><queryType>GET</queryType><resultType>application/x-votable+xml</resultType><param std="true"><name>RA</name><description>Right Ascension (ICRS decimal)</description><unit>deg</unit><ucd>pos.eq.ra</ucd><dataType xsi:type="vs:SimpleDataType">real</dataType></param><param std="true"><name>DEC</name><description>Declination (ICRS decimal)</description><unit>deg</unit><ucd>pos.eq.dec</ucd><dataType xsi:type="vs:SimpleDataType">real</dataType></param><param std="true"><name>SR</name><description>Search radius</description><unit>deg</unit><dataType xsi:type="vs:SimpleDataType">real</dataType></param><param std="false"><name>r_med_mag</name><description>Median magnitude in SDSS r'</description><unit>mag</unit><ucd>phot.mag;em.opt.r</ucd><dataType arraysize="2" xsi:type="vs:SimpleDataType">real</dataType></param><param std="false"><name>i_med_mag</name><description>Median magnitude in SDSS i'</description><unit>mag</unit><ucd>phot.mag;em.opt.I</ucd><dataType arraysize="2" xsi:type="vs:SimpleDataType">real</dataType></param><param std="false"><name>var</name><description>1 if at least one of the r or i light curves was classified as variable. 0 otherwise. The variability analysis is done only for r and i.</description><ucd>meta.code;src.var</ucd><dataType arraysize="2" xsi:type="vs:SimpleDataType">integer</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><maxSR>180</maxSR><maxRecords>100000</maxRecords><verbosity>true</verbosity><testQuery><ra>145.2949318</ra><dec>-56.932663</dec><sr>0.0001</sr></testQuery></capability><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">http://dc.g-vo.org/BGDS2-matched</accessURL><mirrorURL>https://dc.g-vo.org/BGDS2-matched</mirrorURL></interface></capability><capability standardID="ivo://ivoa.net/std/VOSI#capabilities"><interface role="std" xsi:type="vs:ParamHTTP"><accessURL use="full">http://dc.g-vo.org/bgds/l2/matchedphot/capabilities</accessURL><mirrorURL>https://dc.g-vo.org/bgds/l2/matchedphot/capabilities</mirrorURL></interface></capability><capability standardID="ivo://ivoa.net/std/VOSI#availability"><interface role="std" xsi:type="vs:ParamHTTP"><accessURL use="full">http://dc.g-vo.org/bgds/l2/matchedphot/availability</accessURL><mirrorURL>https://dc.g-vo.org/bgds/l2/matchedphot/availability</mirrorURL></interface></capability><capability standardID="ivo://ivoa.net/std/VOSI#tables"><interface role="std" version="1.1" xsi:type="vs:ParamHTTP"><accessURL use="full">http://dc.g-vo.org/bgds/l2/matchedphot/tableMetadata</accessURL><mirrorURL>https://dc.g-vo.org/bgds/l2/matchedphot/tableMetadata</mirrorURL></interface></capability><capability standardID="ivo://ivoa.net/std/TAP#aux"><interface role="std" version="1.1" xsi:type="vs:ParamHTTP"><accessURL use="full">http://dc.g-vo.org/tap</accessURL><mirrorURL>https://dc.g-vo.org/tap</mirrorURL></interface></capability><facility>Universitätssternwarte Bochum near Cerro Armazones</facility><instrument>Robotic Bochum Twin Telescope (RoBoTT)</instrument><coverage><spatial>3/336,338,450-451,461,472,591-592,613,615,621,651-652,659,662-663
4/1301,1303,1358,1376-1377,1379-1380,1382,1794,1816,1818-1819,1822-1823,1829,1840-1841,1892,1894,1897,2327,2333,2335,2357-2359,2376,2378,2400,2402,2408,2492-2493,2495,2528,2530,2536,2538,2591,2599,2601-2603,2612-2614,2616,2634-2635,2643,2646-2647,2656-2657,2688-2690</spatial><temporal>55439 58751.4</temporal><spectral>1.777e-19 6.621e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://dc.g-vo.org/bgds/l2/matchedphot/coverage</footprint><waveband>Optical</waveband></coverage><productTypeServed>timeseries</productTypeServed><tableset><schema><name>bgds2</name><title>BGDS DR2 time series</title><description>
From the Bochum Galactic Disk Survey, time series have been obtained in the
r and i bands on an (up to) nightly basis. Depending on the field, the time
series contain up to more than 300 nights over 9 years. Each measurement in
r and i represents the averaged flux over 10 minutes of observation
(from 9 averaged 10s images). Additionally, intermittent measurements
in Johnson UVB, Sloan z and the narrowbands OIII, NB, Halpha and SII
have been recorded as well.

The Bochum Galactic Disk Survey is a project to monitor the stellar content
of the Galactic disk in a 6 degree wide stripe centered on the Galactic
plane. The data has been recorded from September 2010 to September 2019 in
Sloan r and i simultaneously with the Robotic Bochum Twin Telescope (RoBoTT)
at the Universitaetssternwarte Bochum near Cerro Armazones in the Chilean
Atacama desert. It contains measurements of about 2x10^7 stars over nine
years.

The source images are available from ivo://org.gavo.dc/bgds/q/sia.</description><table><name>bgds2.matched</name><title>BGDS2 Median Photometry Matched to Gaia DR3</title><description> 
			Median photometry in U, B, V, z, r, and i
			broadbands as well as the narrow bands OIII, NB, Halpha and SII
			for particular objects; all measurements have been matched to the
			nearest Gaia DR3 object.

			For the raw measurements, see the bgds2.phot_all table and the
			medphot service.
	</description><nrows>22000000</nrows><column><name>ra</name><description>ICRS RA of the object, obtained as the median of all RA measurements of all r and i measurements. If there are no r and i positions, this is the median of the positions from all filters.</description><unit>deg</unit><ucd>pos.eq.ra;meta.main</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>dec</name><description>ICRS Declination of the object, obtained as the median of all declination measurements of all r and i measurements. If there are no r and i positions, this is the median of the positions from all filters.</description><unit>deg</unit><ucd>pos.eq.dec;meta.main</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>gdr3_id</name><description>Gaia DR3 source_id of this object.</description><ucd>meta.id;meta.main</ucd><stats><min>2929638428592973440</min><percentile03>3.0276701637698514e+18</percentile03><median>5.334893060128903e+18</median><percentile97>6.053414365808342e+18</percentile97><max>6070998738903187712</max><fillFactor>0.99951667</fillFactor></stats><dataType xsi:type="vs:VOTableType">long</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>i_med_mag</name><description>Median magnitude in SDSS i'</description><unit>mag</unit><ucd>phot.mag;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_i_med_mag</name><description>Uncertainty in i_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>i_flux</name><description>Median flux in SDSS i'</description><unit>mJy</unit><ucd>phot.flux;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_i_flux</name><description>Uncertainty in i_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>r_med_mag</name><description>Median magnitude in SDSS r'</description><unit>mag</unit><ucd>phot.mag;em.opt.r</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_r_med_mag</name><description>Uncertainty in r_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.r</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>r_flux</name><description>Median flux in SDSS r'</description><unit>mJy</unit><ucd>phot.flux;em.opt.r</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_r_flux</name><description>Uncertainty in r_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.r</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>ha_med_mag</name><description>Median magnitude in Astrodon Halpha</description><unit>mag</unit><ucd>phot.mag;em.line.halpha</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_ha_med_mag</name><description>Uncertainty in ha_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.line.halpha</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>ha_flux</name><description>Median flux in Astrodon Halpha</description><unit>mJy</unit><ucd>phot.flux;em.line.halpha</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_ha_flux</name><description>Uncertainty in ha_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.line.halpha</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>nb_med_mag</name><description>Median magnitude in Astrodon NB</description><unit>mag</unit><ucd>phot.mag;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_nb_med_mag</name><description>Uncertainty in nb_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>nb_flux</name><description>Median flux in Astrodon NB</description><unit>mJy</unit><ucd>phot.flux;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_nb_flux</name><description>Uncertainty in nb_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>oiii_med_mag</name><description>Median magnitude in Astrodon OIII</description><unit>mag</unit><ucd>phot.mag;em.line.oiii</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_oiii_med_mag</name><description>Uncertainty in oiii_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.line.oiii</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>oiii_flux</name><description>Median flux in Astrodon OIII</description><unit>mJy</unit><ucd>phot.flux;em.line.oiii</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_oiii_flux</name><description>Uncertainty in oiii_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.line.oiii</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>sii_med_mag</name><description>Median magnitude in Astrodon SII</description><unit>mag</unit><ucd>phot.mag;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_sii_med_mag</name><description>Uncertainty in sii_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>sii_flux</name><description>Median flux in Astrodon SII</description><unit>mJy</unit><ucd>phot.flux;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_sii_flux</name><description>Uncertainty in sii_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.line</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>b_med_mag</name><description>Median magnitude in Johnson B</description><unit>mag</unit><ucd>phot.mag;em.opt.b</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_b_med_mag</name><description>Uncertainty in b_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.b</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>b_flux</name><description>Median flux in Johnson B</description><unit>mJy</unit><ucd>phot.flux;em.opt.b</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_b_flux</name><description>Uncertainty in b_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.b</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_med_mag</name><description>Median magnitude in Johnson U</description><unit>mag</unit><ucd>phot.mag;em.opt.U</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_u_med_mag</name><description>Uncertainty in u_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.U</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_flux</name><description>Median flux in Johnson U</description><unit>mJy</unit><ucd>phot.flux;em.opt.U</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_u_flux</name><description>Uncertainty in u_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.U</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v_med_mag</name><description>Median magnitude in Johnson V</description><unit>mag</unit><ucd>phot.mag;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_v_med_mag</name><description>Uncertainty in v_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v_flux</name><description>Median flux in Johnson V</description><unit>mJy</unit><ucd>phot.flux;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_v_flux</name><description>Uncertainty in v_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>z_med_mag</name><description>Median magnitude in SDSS z'</description><unit>mag</unit><ucd>phot.mag;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_z_med_mag</name><description>Uncertainty in z_med_mag</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>z_flux</name><description>Median flux in SDSS z'</description><unit>mJy</unit><ucd>phot.flux;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_z_flux</name><description>Uncertainty in z_flux</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>var</name><description>1 if at least one of the r or i light curves was classified as variable. 0 otherwise. The variability analysis is done only for r and i.</description><ucd>meta.code;src.var</ucd><stats><min>0</min><percentile03>0.0</percentile03><median>0.0</median><percentile97>0.0</percentile97><max>1</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">short</dataType><flag>nullable</flag></column><column><name>spt</name><description>Spectral type estimated via UBV photometry, the reddening path (from 1956ApJ...124..367H), and the fiducial colours per spectral type (from Tab. 1-2 in 1970A&amp;A.....4..234F). This is only given where UBV photometry is available and the reddening path as a unique intersection with the spectral type.</description><ucd>src.sptype</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column></table></schema></tableset></ri:Resource>