[OzEclipse (Joe Cali)]

Starry Night Pro in fact all of the Starry Night versions runs on Mac as well.
Starry Night Pro has starfield simulation based on stitched photographs, twilight/daylight simulation and you can enter details of cameras, telescopes, eyepieces and camera lenses to get field of view maps. Starry Night Pro is relatively expensive at full price but goes on special from time to time. I got my copy for $99.