I have a copy of the newly-released Deep Sky Explorer software, from the makers of Starry Night, opened but in like-new condition and unregistered with manual. It uses the same graphics engine as SN, allowing you to travel through the galaxy and beyond. Compare galaxy clusters and the large scale structure of the universe. This is not meant for practical backyard observing or star charting though. Asking $30 plus shipping, or will consider trade for Starry Night Backyard or Deep Sky 2000, vers. 2.6 w/ CD-ROM.