CCD Photometry of the δ Scuti star FG Virginis During the 1995 Multi-Site Campaign

Abstract

The results of the CCD photometry of the 1995 FG Virginis multi-site campaign, organized by the Delta Scuti Network, are presented. Between March 16 and April 20, 1995 over 120 hours of CCD measurements were obtained. The ten frequencies of FG Vir, known from the previous campaign (1993), range from 9.20 to 34.12 cycles/day (106.5 and 394.9 μHz). Three new frequencies at 16.07, 19.23 and 24.19 c/d (186.0, 222.5 and 279.9 μHz) were detected. The precision of the FG Vir measurements was better than 3.5 mmag per single 1-min integration. It is shown that the present CCD measurements are of similar quality as those obtained simultaneously by photometers with photomultiplier detectors using the three-star observing technique.