Comet Macholtz
I actually shot this for the weather guy on A Channel so he could point viewers in the right direction; he had been telling people to look in the wrong part of the sky. D'oh. Not a bad shot for a quickie, really.
Camera: Nikon FE
Film: Kodak MAX 400
Exposure: 20 minutes guided piggyback using a SkyWatcher f/5 refractor and EQ5 GEM.