This was the second time when I tried to photograph the NanoSail-D.
When I started to take photos the sky was still quite bright, but the sun was setting. Only a few stars were visible. When the nanosail "flashed", it seemed to be slightly brighter than the star next to it. Never seen anything like that before :)
Photo details: Canon EOS 400D + tamron 17-50mm@20mm, f2.8, ISO100, 10s exposures.