There's supposed to be a pretty good meteor shower tonight and I want to try to get some shots. Most sites I've searched say to use an exposure between 15 and 30 seconds but I've read (I think on OT) that a D60 is not meant to stay open that long because heat from the sensor will distort the image. Do you guys have any suggestions? I'm using the 18-55mm kit lens. I live in the suburbs... hopefully it gets dark enough.