Mr Hickey said even he can be stumped by unusual bright lights he sees in the sky, but enjoys finding out the answers. "There is so much more up there in the sky now than there was back in the day."
But he admits there are sightings which truly have no explanation. "It is a great chance to become more educated on the night sky, and when you have more authority on it you appreciate the stuff a lot more," he said.
When you learn about what is in the sky, he said, you can predict when certain things like satellites and planets will be visible.
Mr Hickey said at the event he will be teaching people his prediction techniques for the next very bright light that will be seen in a few weeks.
Entry to the event tonight is the same as normal observatory rates, $10 for adults, and $5 for kids.