I was delighted to receive an email from a Rolf Olsen, who sent a picture of a watercolour his mother had done - it was based on my 'Sydney Opera House Conjunction' image from May 2011.
Thanks to Lene Wahl Olsen for her permission to post it here, and have included my original image for comparison.
You can see a high-res of my original photo here:
http://goo.gl/qoVBl
It's such a great watercolour!