<?xml version='1.0'?><?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?><ri:Resource created="2017-04-05T08:00:00Z" status="active" updated="2024-10-02T09:46:41Z" 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>Photometric Points Obtained by K2/C9 followup</title><shortName>k2c9vst.photpoin</shortName><identifier>ivo://org.gavo.dc/k2c9vst/q/photpoints</identifier><curation><publisher>The GAVO DC team</publisher><creator><name>Hundertmark, M.</name></creator><creator><name>Korhonen, H.</name></creator><creator><name>Jørgensen, U.</name></creator><creator><name>Street, R</name></creator><creator><name>Penny, M.</name></creator><creator><name>Tsapras, Y.</name></creator><creator><name>Dominik, M.</name></creator><creator><name>Kerins, E.</name></creator><creator><name>Cassan, A.</name></creator><creator><name>Snodgrass, C.</name></creator><creator><name>Bachelet, E.</name></creator><creator><name>Bramich, D.</name></creator><creator><name>Bozza, V.</name></creator><date role="Updated">2026-01-16T10:35:23Z</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>light-curves</subject><subject>exoplanets</subject><subject>gravitational-microlensing</subject><subject>time-domain-astronomy</subject><description> The Kepler satellite has observed the Galactic center in a campaign
lasting from April until the end of June 2016 (K2/C9). The main
objective of the 99 hours for the microlensing program 097.C-0261(A)
using the ESO VLT Survey Telescope (VST) was to monitor the superstamp
(i.e., the actually downloaded region of K2/C9) in service mode for
improving the event coverage and securing some color-information. Due
to weather conditions, the majority of images were taken in the red
band. These are part of the present release.

The exact pointing strategy was adjusted to cover the superstamp with
6 pointings and to contain as many microlensing events from earlier
seasons as possible. In addition, a two-point dither was requested to
reduce the impact of bad pixels and detector gaps. Consequently, some
events were getting more coverage and have been observed with
different CCDs. The large footprint of roughly 1 square degree and the
complementary weather conditions at Cerro Paranal have lead to the
coverage of 147 events (this resource's events table), but ~60 of
those were already at baseline.</description><source>http://archive.eso.org/wdb/wdb/eso/sched_rep_arc/query?progid=097.C-0261(A)</source><referenceURL>http://dc.g-vo.org/tableinfo/k2c9vst.photpoints</referenceURL><type>Archive</type><contentLevel>Research</contentLevel></content><facility>ESO</facility><instrument>VST</instrument><coverage><spatial>5/7198,7216-7217,7220-7221,7226-7227,7266
6/28782-28783,28796,28798-28799,28823,28829,28854-28855,28860-28861,28863,28872-28873,28875-28877,28888-28889,28892-28893,28898,28902-28903,28920,28922-28923,29056,29058-29059,29205,29253,29255,29261</spatial><temporal>56693 57663</temporal><waveband>Optical</waveband></coverage><productTypeServed>timeseries</productTypeServed><tableset><schema><name>k2c9vst</name><title>Coordinated microlensing survey observations with Kepler K2/C9 using
VST</title><description> The Kepler satellite has observed the Galactic center in a campaign
lasting from April until the end of June 2016 (K2/C9). The main
objective of the 99 hours for the microlensing program 097.C-0261(A)
using the ESO VLT Survey Telescope (VST) was to monitor the superstamp
(i.e., the actually downloaded region of K2/C9) in service mode for
improving the event coverage and securing some color-information. Due
to weather conditions, the majority of images were taken in the red
band. These are part of the present release.

The exact pointing strategy was adjusted to cover the superstamp with
6 pointings and to contain as many microlensing events from earlier
seasons as possible. In addition, a two-point dither was requested to
reduce the impact of bad pixels and detector gaps. Consequently, some
events were getting more coverage and have been observed with
different CCDs. The large footprint of roughly 1 square degree and the
complementary weather conditions at Cerro Paranal have lead to the
coverage of 147 events (this resource's events table), but ~60 of
those were already at baseline.</description><table><name>k2c9vst.photpoints</name><title>Photometric Points Obtained by K2/C9 followup</title><description> The Kepler satellite has observed the Galactic center in a campaign
lasting from April until the end of June 2016 (K2/C9). The main
objective of the 99 hours for the microlensing program 097.C-0261(A)
using the ESO VLT Survey Telescope (VST) was to monitor the superstamp
(i.e., the actually downloaded region of K2/C9) in service mode for
improving the event coverage and securing some color-information. Due
to weather conditions, the majority of images were taken in the red
band. These are part of the present release.

The exact pointing strategy was adjusted to cover the superstamp with
6 pointings and to contain as many microlensing events from earlier
seasons as possible. In addition, a two-point dither was requested to
reduce the impact of bad pixels and detector gaps. Consequently, some
events were getting more coverage and have been observed with
different CCDs. The large footprint of roughly 1 square degree and the
complementary weather conditions at Cerro Paranal have lead to the
coverage of 147 events (this resource's events table), but ~60 of
those were already at baseline.</description><nrows>9384</nrows><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>indexed</flag><flag>nullable</flag></column><column><name>owner</name><description>Owner of the data</description><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>embargo</name><description>Date the data will become/became public</description><unit>yr</unit><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>mime</name><description>MIME type of the file served</description><ucd>meta.code.mime</ucd><utype>Access.Format</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><stats><min>3015</min><percentile03>7792.0</percentile03><median>22857.0</median><percentile97>44613.0</percentile97><max>44730</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">long</dataType><flag>nullable</flag></column><column><name>did</name><description>Local dataset identifier for the lightcurve this point belongs to.</description><ucd>meta.id;meta.main</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>event_id</name><description>Associated Event</description><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>obs_time</name><description>Time this photometry corresponds to.</description><unit>d</unit><ucd>time.epoch</ucd><stats><min>2.45749e+06</min><percentile03>2.45749e+06</percentile03><median>2.45753e+06</median><percentile97>2.45756e+06</percentile97><max>2.45756e+06</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>phot</name><description>SDSS r-band instrumental magnitude (warning: zeropoint may be off several mag).</description><unit>mag</unit><ucd>phot.mag;em.opt.R</ucd><stats><min>15.5032</min><percentile03>17.2043</percentile03><median>20.2067</median><percentile97>22.5571</percentile97><max>28.4063</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>image</name><description>VST image this point was taken from. The raw images are available at http://archive.eso.org/wdb/wdb/eso/eso_archive_main/query?prog_id=097.C-0261(A)</description><ucd>meta.ref;meta.file</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>df</name><description>Difference flux as defined by 2008MNRAS.386L..77B</description><unit>adu</unit><ucd>phot.flux</ucd><stats><min>-105651</min><percentile03>-43555.7</percentile03><median>28.9601</median><percentile97>3777.14</percentile97><max>77312</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>e_df</name><description>Error in difference flux.</description><unit>adu</unit><ucd>stat.error;phot.flux</ucd><stats><min>65.2037</min><percentile03>97.5333</percentile03><median>173.61</median><percentile97>322.863</percentile97><max>535.967</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>rf</name><description>Reference flux as defined by 2008MNRAS.386L..77B</description><unit>adu</unit><ucd>phot.flux</ucd><stats><min>421.672</min><percentile03>765.748</percentile03><median>4975.66</median><percentile97>169208</percentile97><max>298684</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>e_rf</name><description>Error in reference Flux</description><unit>adu</unit><ucd>stat.error;phot.flux</ucd><stats><min>153.848</min><percentile03>191.575</percentile03><median>509.777</median><percentile97>1185.64</percentile97><max>1237.55</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_phot</name><description>Error in SDSS r-band instrumental magnitude.</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><stats><min>0.00149915</min><percentile03>0.0039405</percentile03><median>0.0374375</median><percentile97>0.339084</percentile97><max>465.271</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>exp_time</name><description>Exposure time.</description><unit>s</unit><ucd>time.duration;obs.exposure</ucd><stats><min>60</min><percentile03>60</percentile03><median>60</median><percentile97>60</percentile97><max>60</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>fwhm</name><description>FWHM of the point spread function averaged over all stars on the subimage used.</description><unit>arcsec</unit><ucd>phys.angSize;instr.det.psf</ucd><stats><min>2.114</min><percentile03>2.94858</percentile03><median>5.15415</median><percentile97>7.02217</percentile97><max>9.4496</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>sky_background</name><description>Median sky background flux.</description><unit>adu</unit><ucd>instr.background</ucd><stats><min>98.9249</min><percentile03>150.865</percentile03><median>236.323</median><percentile97>849.876</percentile97><max>1630.8</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>phot_scale_factor</name><description>Scale factor according to 2008MNRAS.386L..77B; if small, photometry was obtained under suboptimal atmospheric transparency.</description><stats><min>0.0711038</min><percentile03>0.432164</percentile03><median>0.972189</median><percentile97>1.00393</percentile97><max>1.11312</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>chi2_px</name><description>See 2008MNRAS.386L..77B, sect. 2.1</description><ucd>stat.fit.chi2</ucd><stats><min>0</min><percentile03>0.631535</percentile03><median>0.896385</median><percentile97>2.58908</percentile97><max>7.91392</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>dx</name><description>Pixel offset of frame wrt. the reference frame, x direction</description><unit>pixel</unit><ucd>pos.cartesian.x;arith.diff</ucd><stats><min>-29.7382</min><percentile03>-5.58953</percentile03><median>-0.029255</median><percentile97>6.12559</percentile97><max>30.2525</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>dy</name><description>Pixel offset of frame wrt. the reference frame, y direction</description><unit>pixel</unit><ucd>pos.cartesian.y;arith.diff</ucd><stats><min>-27.6162</min><percentile03>-5.46111</percentile03><median>-0.67252</median><percentile97>6.06496</percentile97><max>25.0695</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>corr_coeff</name><description>Coefficients of correction polynomial for frame: TBD</description><dataType arraysize="4" xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><foreignKey><targetTable>k2c9vst.events</targetTable><fkColumn><fromColumn>event_id</fromColumn><targetColumn>event_id</targetColumn></fkColumn></foreignKey></table></schema></tableset></ri:Resource>