Hey guys. just wanted some advise. I am going out to the country tonight to try my hand at astrophotography for the 1st time! my plan is (and this is where i will need some help) is to point my camera up at the sky and do 30sec exposures ( long enough? ) what is the best lens to use? i have a 50mm f1.8 and a 18 - 250mm 3.5 what one is going to work best? shall i use the 18-250mm zoomed in? will that help me get 'closer' to the stars? thanks guys!! by the way i will be using a canon 60d on a gorilla pod.