There is a multitude of astronomy events events coming up at the end of August, why don't you pick up your favourite:
Saturday 15 August IAA event: IYA2009 Solar Day at Carnfunnock
Sunday 16 August IAA event: IYA2009 Solar Day at Mount Stewart
Saturday August 22, Roundwood, Co Wicklow:
Saturday 22 August - Sunday 30 August: special astronomy exhibition during the Heritage National Week at Newgrange