I went out last night to one of the dark sky discovery sites - Mill Pond near Malvern. I had my camera (Panasonic Lumix G3, 14-42 kit lens) set up as per instructions on a website about this kind of photography - lens at widest setting f/3.5, maximum ISO 3200, white balance 4000K, RAW, Long shutter NR off, exposures of 10", 20", 30", 40". It was a good clear night with a very starry sky, but the shots I got were disappointing - no more than a handful of stars visible, whereas I had hoped for a bright milky way display. I'd be grateful if anyone could suggest any reason that so little was picked up? I have no real experience of this kind of photography - have I made some simple mistake, or is the camera just not good enough or what?
Many thanks