LBCS Calibrator Searchivo://astron.nl/lbcs/lobos/coneASTRONDeller, A.2025-04-11T15:19:14Michael Sipior

Oude Hoogeveensedijk 4, 7991PD Dwingeloo, the Netherlands

vo@astron.nlCatalogs This service queries the catalog of calibrators from the LOFAR Long-Baseline Calibrator Survey (LBCS). The LBCS aims to identify sources suitable for calibrating the highest-resolution observations made with the International LOFAR Telescope, which include baselines >1000 km. Suitable sources must contain significant correlated flux density (>50-100 mJy) at frequencies around 110-190 MHz on scales of a few hundred milliarcseconds. If you use this data, cite Jackson et al. 2016 (A&A 595A, 86J). For a description of the catalog format, see https://www.jb.man.ac.uk/~njj/lbcs_stats.sum.2016A&A...595A..86Jhttps://vo.astron.nl/lbcs/lobos/cone/infoLOFARRadiolbcs This service queries the catalog of calibrators from the LOFAR Long-Baseline Calibrator Survey (LBCS). The LBCS aims to identify sources suitable for calibrating the highest-resolution observations made with the International LOFAR Telescope, which include baselines >1000 km. Suitable sources must contain significant correlated flux density (>50-100 mJy) at frequencies around 110-190 MHz on scales of a few hundred milliarcseconds. If you use this data, cite Jackson et al. 2016 (A&A 595A, 86J). For a description of the catalog format, see https://www.jb.man.ac.uk/~njj/lbcs_stats.sum.lbcs.main This service queries the catalog of calibrators from the LOFAR Long-Baseline Calibrator Survey (LBCS). The LBCS aims to identify sources suitable for calibrating the highest-resolution observations made with the International LOFAR Telescope, which include baselines >1000 km. Suitable sources must contain significant correlated flux density (>50-100 mJy) at frequencies around 110-190 MHz on scales of a few hundred milliarcseconds. If you use this data, cite Jackson et al. 2016 (A&A 595A, 86J). For a description of the catalog format, see https://www.jb.man.ac.uk/~njj/lbcs_stats.sum.obsidLOFAR Observation IDmeta.id;meta.maincharindexedprimaryraj2000Source J2000 Right Ascension, in decimal degrees.degpos.eq.ra;meta.maindoubleindexeddecj2000Source J2000 Declination, in decimal degrees.degpos.eq.dec;meta.maindoubleindexedobsdateObservation date.time.epoch;obscharobstimeObservation time.time.epoch;obscharbaselinequalGoodness of the calibrator on the international stations, judged by signal-to-noise ratio of the fringe fit.charobsqualQuality of the observation, judged by the percentage of source detections on the shorter baselines.shortbaselinequalftGoodness of the calibrator on the international stations, judged by signal-to-noise of the Fourier transform of the data.charobsflagObservation flag.char