SIMBAD references

The results of the 1995 FG Vir multi-site campaign, organized by the Delta Scuti Network, are presented. Between 1995 March 2 and April 20 over 430 hours of photoelectric an 120 hours of CCD measurements were obtained during a time span of 40 days at six observatories. The previously known ten frequencies range from 9.20 to 34.12 cycles/day (106.5 and 394.9 µHz). Fourteen additional frequencies were detected. The precision of the FG Vir measurements was better than 3 mmag for the photoelectric measurements and better than 3.5 mmag per single 1 minute integration for the CCD measurements. Further 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.