*Update* Michael mentioned the BBC Documentary on the subject. It can be seen here……..
The Antikythera Mechanism has been described as the 'World's Oldest Computer'. Dated to around 2,000 years ago, it was found in an ancient shipwreck off the coast of the Greek island of Antikythera. It's incredibly complex for such an ancient artifact, and was capable of predicting eclipses and other astronomical events. This is bound to be a fascinating talk.
Michael O'Connell is one of Irelands leading amateur astronomers, beng a past Chairman of the Irish Federation of Astronomy Societies and IFAS Astronomer of the Year 2009.