WEBT observations are made at the Perugia Observatory by Gino Tosti with the Automatic Imaging Telescope (AIT).
Telescope parameters: Long= +12.3916 deg, Lat= +43.1122 deg, Alt=451 m
Optical configuration: Newtonian, D= 0.4 m, f/D= 5; Seeing_typical= 2″.5 – 3″, Skybrightness_typical= V=18.5 mag/arcsec^2;
CCD camera: Spectrasource Ins. Ltd., Peltier cooled 50 deg C wrt ambient, CCD chip: TI TC211, 192×165 pixels, 13.5×16.5 um pixel width;
Filters: diameter = 1in, Johnson B (BG12 (2mm) + GG385 (1mm) + BG39 (1mm)), Johnson V (GG495 (2mm) + BG39 (2mm)); Cousins R_c (OG570 (2mm) + KG3 (2mm)); Cousins I_c (RG9 (3mm)); absolute photometry to 0.06 magnitudes accuracy, differential photometry to 0.02 magnitudes.