well the mist is the biggest spoilsport when looking for stars around here.
It's rare to get good moonless nights these days.
http://www.peteglastonbury.plus.com/Astronomy.html
for a few Avebury pics.
The Stonehenge moonrise event is awesome. The sunsets and then moments later the fullmoon rises to the left of the heelstone.
An amazing thing to experience is the stones glowing pink as the sunsets.
http://www.peteglastonbury.plus.com/Photos/Stonehenge/Stonehenge2005.html
PeteG