Ok so i need to find a point and shoot for a big trip in New mexico ths summer. Im backpacking 75 miles and i cnnot bring slr gear. I wanted to find a tough Point and shoot. I mainlt wanted to see if any of them had shutter release capabilities. Some of the sigma ones said sutter speeds as low as 15 minutes. But can any point and shoot have a optional shutter release excessory or long exposure to handle star trails?? thats my main concern. It does not have to be tough per say but able to have that capablility. Sigma, Canon, Leica. Any of those point and shoots have that capablility? I will be brinig my gorrilla pod to do long exposures. I heard the g9/10 have good performance and manual settings..thanks.