A few other thoughts about camping in Utah. Main concern are overexposure to sun and not enough water. Even though you'll do your astronomy at night, you'll be camping and probably hiking during the day. I ALWAYS make sure I'm outside with plenty of heavy-duty sunblock (I try to get 50), a long-sleeved shirt and a hat. Take a good map and tell someone exactly where you'll be. Carry along a cell phone in case of trouble, although I've been in a few places where the phone won't reach -- in an emergency you may be able to climb onto a high hill and connect. Don't run out of gas. I used to have Jerry cans on the back of my CJ-5 because its mileage was awful. Take enough warm clothing, a heavy sleeping bag and a foam mattess. If you worry about weather, a tent's a good idea (I usually don't bother). Of course, you shouldn't expect any facilities for most of the good camping spots. Check your tires so you won't get a flat on our rough desert roads. -- Best wishes, Joe