Re: [vsnet-chat 3001] SW Vul > SW Vul apparently unobserved since its 1923 eruption? see > 1992A&AS...93..419B for spectroscopy. SW Vul has been relatively densely observed (at least recently), but bright outbursts look rare. According to my memory, the only outburst reported to VSNET occurred in 1995, and was detected by Tonny Vanmunster. Several other photographic records exist. It may be likely most outbursts don't well reach the limiting magnitude of visual observers. Regards, Taichi Kato