J/A+AS/117/475ivo://CDS.VizieR/J/A+AS/117/475CDSFiorucci M.Tsoti G.1997-12-09T18:09:47Z1997-12-09T19:09:44ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frbl-lacertae-objectsvisible-astronomyWide-band photometryWe report the BVR_c_I_c_ data for 10 blazars observed in the first phase of a long-term photometric monitoring program of about 30 objects. The observations were carried out with a 0.40-m automatic imaging telescope, recently developed by our group at the Perugia University Observatory. During our period of observation 1215+303 and 1424+240 were at their highest values of magnitude, while 0754+100 and 0829+043 displayed large amplitude flares. We further report optical data of Mrk 501 during the same period in which TeV {gamma}-rays were detected by the Whipple Observatory. For a description of the (RI)c photometric system, see e.g. the General Catalog of Photometry Data <GCPD/54>.1996A&AS..117..475Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/117/475CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/117/475https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/117/475http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/117/475https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/117/475https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/117/475http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/117/475GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/117/475/table2List of BVRcIc datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameBlazar namemeta.id;meta.maincharDateUT datetime.epochcharHJDHeliocentric Julian datedtime.epochdoublel_BmagLimit flag on B magnitudemeta.code.errorcharBmag? B magnitudemagphot.mag;em.opt.Bfloate_Bmag? rms uncertainty on B magnitudemagstat.errorfloatVmag? V magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on V magnitudemagstat.errorfloatRcmag? Cousins Rc magnitudemagphot.mag;em.opt.Rfloate_Rcmag? rms uncertainty on Rc magnitudemagstat.errorfloatIcmag? Cousins Ic magnitudemagphot.mag;em.opt.Ifloate_Icmag? rms uncertainty on Ic magnitudemagstat.errorfloat