There are a couple of places I have tried out in the Dandenongs, the arboretum behind the olinda golf course is not too bad, but the trick is to keep away from the dusty dirt road, I'm always on the look out for new spots around there, and I know of a couple more in Olinda that I am keen to check out. I am interested in getting together for new moon nights in that area if anyone else is then PM me.
Actually on second thoughts another place I was considering checking out, was some of the farm land out the back of lilydale, ie go and check that the farmers dont mind first and then herd the cows out of the way......cows know a good observing spot i've heard
Daniel