Monday, April 19, 2010 there was a Discovery Channel star party on the roof of an 18-story building at Fifth Avenue and 18th Street. More than a dozen amateur astronomers brought their telescopes and set up facing the buildings of midtown and Times Square. The conditions were spectacular. I brought my ETX-125 and macbook pro, and setup an astrophotography station to image the Moon and Saturn. It was breezy, but I did manage Saturn at f/30, very, very, soft. The above is a detail from a larger exposure (1392 x 1040 16-bit) at prime focus, f/15. Click a couple of times on the image to open full size. Note the two ghost craters on Mare Nectaris plain. The multi-peaked crater Theophilus is displaying it’s fourth peak. Here is a closeup after reprocessing the stack:
This was the scene behind me: yes, that’s the Empire State Building just up the street.