I managed to borrow a 20D today.
This is 3 min guided shot @ ISO 800 with 10mm Lens f/5.6
***single frame****
Some post processing using Photoshop was done.

Severe glow from Sydney in left corner tonight.
I'd love to try again when seeing is better, I was in a hurry tonight, rain had cleared earlier and I didn't think the opp would last.
Cheers
RB