Multi-wavelength observations of dwarf novae during outburst

Multi-wavelength observations of dwarf novae during outburst are presented here. Thirty three objects were observed, of which seventeen were at outburst. Six objects were caught during the rise, and a short flare was detected in SU UMa. It lasted 20 hours and reached a maximum increase of 3.6 in flux at 5500 A. The flare was simultaneous at all observed wavelengths.Paper presented at the IAU Colloquium No. 93 on Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Developments, held at Dr. Remeis-Sternwarte Bamberg, F.R.G., 16–19 June, 1986.