<?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="2026-04-07T09:11:38Z" version="1.2" xmlns:g-colstat="http://dc.g-vo.org/ColStats-1" 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://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/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:CatalogResource"><title>BGDS DR2 time series</title><shortName>bgds2.phot_v</shortName><identifier>ivo://org.gavo.dc/bgds/l2/phot_v</identifier><altIdentifier>doi:10.21938/dChYyzuCGA00rsfzfQ8v:Q</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> BGDS median photometry in the Johnson V band. This is available for
all objects found in the fields observed. Median photometry in the i'
and r' bands is given in the lc_(band) tables together with the
lightcurves.</description><source format="bibcode">2026AN....34770087B</source><referenceURL>https://dc.g-vo.org/tableinfo/bgds2.phot_v</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></content><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><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.phot_v</name><description> BGDS median photometry in the Johnson V band. This is available for
all objects found in the fields observed. Median photometry in the i'
and r' bands is given in the lc_(band) tables together with the
lightcurves.</description><nrows>6300000</nrows><column><name>obs_id</name><description>Main identifier of this observation (a single object may have multiple observations in different bands and fields)</description><ucd>meta.id;meta.main</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>indexed</flag><flag>primary</flag></column><column><name>ra</name><description>ICRS right ascension for this object as mean of the positions obtained from source extraction.</description><ucd>pos.eq.ra;meta.main</ucd><stats><min>106.131</min><percentile03>109.594</percentile03><median>157.633</median><percentile97>268.233</percentile97><max>270.869</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>dec</name><description>ICRS declination for this object as mean of the positions obtained from the source extraction.</description><ucd>pos.eq.dec;meta.main</ucd><stats><min>-65.9381</min><percentile03>-64.4271</percentile03><median>-41.9364</median><percentile97>-13.2473</percentile97><max>-7.33785</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>med_mag_v</name><description>Median magnitude in Johnson V.</description><unit>mag</unit><ucd>phot.mag;em.opt.V;stat.median</ucd><stats><min>8.04209</min><percentile03>12.925</percentile03><median>16.5401</median><percentile97>18.0023</percentile97><max>21.1589</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_mag_v</name><description>Error in median magnitude in Johnson V</description><unit>mag</unit><ucd>stat.error;phot.mag;em.opt.V</ucd><stats><min>0.03206</min><percentile03>0.06604</percentile03><median>0.15839</median><percentile97>0.35029</percentile97><max>5.85404</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>amp</name><description>Difference between brightest and weakest observation.</description><unit>mag</unit><ucd>phot.mag;em.opt.V;arith.diff</ucd><stats><min>0</min><percentile03>0.01052</percentile03><median>0.15766</median><percentile97>0.63663</percentile97><max>8.42177</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>flux</name><description>Median flux in the Johnson V band; this is computed from the median magnitude based on Landolt standard stars.</description><unit>mJy</unit><ucd>phot.flux;em.opt.V;stat.median</ucd><stats><min>0.01369</min><percentile03>0.24225</percentile03><median>0.93093</median><percentile97>25.9417</percentile97><max>2346.82</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>err_flux</name><description>Error in median flux in the Johnson V band</description><unit>mJy</unit><ucd>stat.error;phot.flux;em.opt.V</ucd><stats><min>0.01465</min><percentile03>0.04864</percentile03><median>0.14373</median><percentile97>1.8485</percentile97><max>1035.12</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>nobs</name><description>Number of observations of this object</description><ucd>meta.number;obs</ucd><stats><min>2</min><percentile03>2.0</percentile03><median>3.0</median><percentile97>4.0</percentile97><max>4</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">short</dataType></column><column><name>field</name><description>Survey field observed.</description><ucd>meta.id;obs.field</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>gdr3_id</name><description>Gaia DR3 source_id of this object.</description><ucd>meta.id.cross</ucd><stats><min>2929638325513761920</min><percentile03>3.0311013916592205e+18</percentile03><median>5.350285123372937e+18</median><percentile97>6.057376618814555e+18</percentile97><max>6070998537069828864</max><fillFactor>0.99997145</fillFactor></stats><dataType xsi:type="vs:VOTableType">long</dataType><flag>nullable</flag></column></table></schema></tableset></ri:Resource>