Giannini, E.E.GianniniSchmidt, R. W.R. W.SchmidtWambsganss, J.J.WambsganssAlsubai, K.K.AlsubaiAndersen, J. M.J. M.AndersenAnguita, T.T.AnguitaBozza, V.V.BozzaBramich, D. M.D. M.BramichBrowne, P.P.BrowneCalchi Novati, S.S.Calchi NovatiDamerdji, Y.Y.DamerdjiDiehl, C.C.DiehlDodds, P.P.DoddsDominik, M.M.DominikElyiv, A.A.ElyivFang, X.X.FangFiguera Jaimes, R.R.Figuera JaimesFinet, F.F.FinetGerner, T.T.GernerGu, S.S.GuHardis, S.S.HardisHarpsøe, K.K.HarpsøeHinse, T. C.T. C.HinseHornstrup, A.A.HornstrupHundertmark, M.M.HundertmarkJessen-Hansen, J.J.Jessen-HansenJørgensen, U. G.U. G.JørgensenJuncher, D.D.JuncherKains, N.N.KainsKerins, E.E.KerinsKorhonen, H.H.KorhonenLiebig, C.C.LiebigLund, M. N.M. N.LundLundkvist, M. S.M. S.LundkvistMaier, G.G.MaierMancini, L.L.ManciniMasi, G.G.MasiMathiasen, M.M.MathiasenPenny, M.M.PennyProft, S.S.ProftRabus, M.M.RabusRahvar, S.S.RahvarRICCI, DAVIDEDAVIDERICCIScarpetta, G.G.ScarpettaSahu, K.K.SahuSchäfer, S.S.SchäferSchönebeck, F.F.SchönebeckSkottfelt, J.J.SkottfeltSnodgrass, C.C.SnodgrassSouthworth, J.J.SouthworthSurdej, J.J.SurdejTregloan-Reed, J.J.Tregloan-ReedVilela, C.C.VilelaWertz, O.O.WertzZimmer, F.F.Zimmer2020-08-262020-08-2620170004-6361http://hdl.handle.net/20.500.12386/26827Aims: We present V and R photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756. The data were taken by the MiNDSTEp collaboration with the 1.54 m Danish telescope at the ESO La Silla observatory from 2008 to 2012. <BR /> Methods: Differential photometry has been carried out using the image subtraction method as implemented in the HOTPAnTS package, additionally using GALFIT for quasar photometry. Results: The quasar WFI 2033-4723 showed brightness variations of order 0.5 mag in V and R during the campaign. The two lensed components of quasar HE 0047-1756 varied by 0.2-0.3 mag within five years. We provide, for the first time, an estimate of the time delay of component B with respect to A of ∆t = (7.6 ± 1.8) days for this object. We also find evidence for a secular evolution of the magnitude difference between components A and B in both filters, which we explain as due to a long-duration microlensing event. Finally we find that both quasars WFI 2033-4723 and HE 0047-1756 become bluer when brighter, which is consistent with previous studies. Based on data collected by MiNDSTEp with the Danish 1.54 m telescope at the ESO La Silla observatory.STAMPAenArticle10.1051/0004-6361/2015274222-s2.0-85007348650000392392900016https://www.aanda.org/articles/aa/abs/2017/01/aa27422-15/aa27422-15.html2017A&A...597A..49GFIS/05 - ASTRONOMIA E ASTROFISICA