Mike Salway does indeed do excellent planetary work but the required equipment and techniques are *entirely* different to long focal length Deep Sky imaging....which was still is my point...and my apologies if this was not made clear.
Bert held up some good examples, but at FL 300mm? Hardly a tracking challenge (but, sorry, the stars are square. Please compare them to those here:
http://www.atscope.com.au/halpha/etaf35sigma.jpg )
Also at 300mm...but admittedly not in colour..yet...
When I say push the (deep sky) envelope I can think of no better practitioner in Oz than Martin Pugh.
http://www.martinpughastrophotograph...6726_75pct.jpg
Now that's what I'm taking about!
Cheers
Peter