There are 3 north of the river:
I'm with AAQ who meet at the planetarium on a Saturday
www.aaq.org.au
SEQAS meet at Chermside on a Tues
http://www.seqas.org/
BAS meet at Kelvin Grove on a Friday
http://www.bas.asn.au
So there is always a group convenient!!!!
(I find it rather bizare and equally stupid that so many exist - what a waste of resources having 5 clubs in Brisbane)