Geoff,
ASWA has it's "Lunatics" monthly event on Saturday 28th. It's at a metro location so would be easy for you to get to. That's the only one I know of.
See:
http://aswa.info/
In the
Diary page is the contact info for the october lunatics organiser, she'll be happy to help. Lunatics usually sees 8 - 15 members turn up with scopes and so on. A good bunch of people. I rarely go to it (and probably won't be this time) but enjoy it when I go.
Roger.