Astro images by Humayun and Chris (Hotspur) are on display at the Brisbane Planetarium as well. Sorry, I did not recognise members real names at the time. I am sure that there are others from IIS who have their works hanging on the wall.
The interesting point for me is the amazing quality of these images. The opposite wall has pictures that have been taken at professional observatories. In my opinion, the efforts of "amateurs" are on par and sometimes better.