Mern, we were observing at Kitt Peak National Observatory
, so at around 6800 ft, and the weather at nights was maybe low 70s. We were observing with a giant 4-meter diameter telescope. It is in a giant dome, and we sat in the control room and pushed buttons. It's all done via computer scripts. Maybe I'll post a couple pictures after work. It was my first observing run, and it went very well.