Thanks so much for the kind words, I was only able to get hints of the 4th jet as it is very faint but it is buried in the noise and I could not dig it out. I had some issues with my flats and they are most important when you go after very faint structures.
The text about Moorook was taken from the Riverland Dingo Observatory page here written by Brad Moore
http://www.riverdingo.net.au/welcome.htm so I have to plead ignorance
I have only looked at the site with google and have not been there before so thank you for the information as I would not want to offend any potential friends.
Regards,
Ken Crawford