It's been pretty good here in the last couple of days. I got out last night but didn't do too well owing to inability to get precise focus. I did a little better tonight by hunting down my old 85/1.8 manual lens, which has a nice hard infinity stop, and is fast enough not to elongate the stars too much. The D7100 is still a little noisy at night, but at least I can say yes, there was a comet. Unfortunately, fumbling in the dark with various different ISO settings, I managed to switch it from Raw to JPG, which ticks me off, but oh well.