LivQLensMonivo://org.gavo.dc/liverpool/res/rawframes/qThe GAVO DC teamGoicoechea, L.J.Shalyapin, V.Gil-Merino, R.Ullán, A.The GLENDAMA Team2026-01-16T10:24:14Z2009-11-30GAVO Data Centre Team

Mönchhofstrasse 12-14, D-69120 Heidelberg

gavo@ari.uni-heidelberg.de+49 6221 54 1837quasarsstrong-gravitational-lensingobservational-cosmologyThis collection includes optical monitorings of gravitationally lensed quasars. The frames can be used to make light curves of quasar images and field objects. From quasar light curves, one may measure time delays and flux ratios, analyse variability and chromaticity, etc. These direct analyses/measurements are basic tools for different astrophysical studies, e.g., expansion rate of the Universe, mechanism of intrinsic variability in quasars, accretion disk structure, supermassive black holes, dark halos of galaxies (dust, collapsed dark matter, smoothly distributed dark matter,...)https://dc.g-vo.org/liverpool/res/rawframes/q/infoIsServedByGAVO Data Center ObscoreLens Image ArchiveGAVO Data Center TAP service The Liverpool robotic telescope frames have been obtained from different observational programmes conducted by the GLENDAMA team, and are in the public domain. Additional information (Liverpool Quasar Lens Monitoring project, data releases and other scientific outputs, etc) are available at the `GLENDAMA Web Site <http://grupos.unican.es/glendama/>`__.2m Liverpool robotic telescope (Canary Islands, Spain)RATCam CCD camera and gri Sloan filters5/1816,1856,4804 6/4574,4593,4596-4597,8705,8707,871054009.2 54674.92.30982e-19 5.44232e-19https://dc.g-vo.org/liverpool/res/rawframes/q/coverageOpticalliverpoolThis collection includes optical monitorings of gravitationally lensed quasars. The frames can be used to make light curves of quasar images and field objects. From quasar light curves, one may measure time delays and flux ratios, analyse variability and chromaticity, etc. These direct analyses/measurements are basic tools for different astrophysical studies, e.g., expansion rate of the Universe, mechanism of intrinsic variability in quasars, accretion disk structure, supermassive black holes, dark halos of galaxies (dust, collapsed dark matter, smoothly distributed dark matter,...)outputThis collection includes optical monitorings of gravitationally lensed quasars. The frames can be used to make light curves of quasar images and field objects. From quasar light curves, one may measure time delays and flux ratios, analyse variability and chromaticity, etc. These direct analyses/measurements are basic tools for different astrophysical studies, e.g., expansion rate of the Universe, mechanism of intrinsic variability in quasars, accretion disk structure, supermassive black holes, dark halos of galaxies (dust, collapsed dark matter, smoothly distributed dark matter,...)starttimeUT at start of observationtime.startcharnullableaccrefAccess key for the datameta.ref.urlAccess.ReferencecharnullableobjectObject observed, Simbad resolvable identifiermeta.idcharnullableexposureExposure timestime.duration;obs.exposure1001001203003001floatnullablebandpassidFree-form name of the bandpass usedinstr.bandpasscharnullableaccsizeSize of the data in bytesbyteVOX:Image_FileSizeAccess.Size21196802119680.02119680.02122560.021225601.0longnullableairmassAir mass at center of observationobs.airMass1.020671.04511.452.122.628361floatnullablemoonfracFraction of illuminated area of the moon at obs. timeobs.param;arith.ratio0.00036590.001574740.4467480.9978770.99981floatnullablemoondistLunar distance from targetdegpos.angDistance30.303434.147690.9128164.078169.8221floatnullablebackgroundBackground in countsct.s**-1instr.background98.176111.519418.6557400.59205261floatnullableseeingEstimate for seeing at observation timearcsecinstr.obsty.seeing0.6147190.9027121.49773.75204278.0921floatnullable