How good are those twelve inch DOBS. We got one for our school and my mate took it home first and I phoned him to see how it was going. Hearing the excitement in his voice I drove straight over and we found ab out 15 galaxies in the first hour. Another good map for the night sky comes from
http://www.skymaps.com/skymaps/tesms1012.pdf for a monthly picture with good information about what can be seen with the naked eye, bioculars and telescopes. You should also download Cartes Du Ciel which is free and I find good.
Enjoy your DOB
Mark