Hi Damon,
Welcome, the two main astro clubs are AGWA and ASWA I'm a member of AGWA and I must admit we aren't very good at advertising ourselves. If you want info pm me. they meet the last Tuesday of the month at 7:30pm currently at the ballujura community centre, but next year we'll be moving the meeting to the first Tuesday of the month at the Bassendean Seniors Hall, 50 Old Perth Road
I'm in Landsdale not far from you so if you want to come around with your scope I'd be happy to give you a hand.
Btw remember the less moon the better, unless of course you're looking at the moon
Cheers
Garin