G'day Heath,
The most I can find on the Macedon Observatory is at:
http://www.southerngalactic.com/
I understand that a gentleman by the name of Bert Candusio runs the place.
I live only 13km to the west of the site but, apart from hearing a couple of years ago how expensive it is, I've never been there or heard of anyone who has.
I do know that the site, like mine, would suffer from being under the flight path into Tullamarine International!
Cheers
Chris