With a 200mm lense and around 40 second's exposure time i believe but will ask and post more 
200mm lens if it was mounted at a single point instead of a cradle it was definitely camera movement, I use a 200 mm lens to but it mounted on a schmitt-casigran with a cradle to stop wobble (200 mm is a long lens)
with a starmate tracking system to follow the night sky( remember we rotate the sky does not). Also you might want to try using a ccd camera with a telescope and drive motor. 40 sec stationary will create trails.
at a close look you might have caught a star cluster(do you know what constellation it was in?) try looking at the negative through a micro scope. If you can get the info on what constellation it was I can search The area with a 10 in SC with a ccd and get a good clear pic and even add some color with filters. Yes my hobby is astronomy for about the last 15 or so years. If you want to buy a scope try starting with a Newtonion or Dobsonion not great for photos but you can get a 12in light bucket for around a grand. Check Orion or Mead for exact prices. I know this doesn't help but to be correct we need info. also if you decide to get a scope I suggest at least a 10 in you start to get color at 10 in and above instead of white lights.For more help just PM me that way it doesent get side traced. By the way if a solar flair hit the earth and not stopped by the atmosphere non of us would be here to read this. And the last time we seen a super nova from earth was in the 300 in china now known as the crab nebula.