WEBT Observations are done at the M.G. Fracastoro Mountain Station, located at Serra La Nave, on the Etna Mountain.
Telescope parameters: Long= +14.973 deg, Lat= +37.692 deg, Altitude= 1725 m
Optical configuration: the telescope is a 91 cm classical Cassegrain
Equipment: observations are done in UBV bands by means of a photometer; it employs a EMI 9893QA/350, spectral response S20 photomultiplier, which cooled to -15 C has a dark courrent of 1 count/sec. The input diaphragm can be manually set to the following FOV 14.5, 21.7, 28.9, and 43.4 arcsec. Typical sky brightness is 21.3 mag/arsec2 in U, 21.1 mag/arsec2 in B, and 20.7 mag/arsec2 in V.