Thanks for the comments guys. I agree about the reflection on the solar panels, although it's kind of "nodally" correct. The panels have lots of squares that are reflective separated by parts that are not. This is how it is in real life and how I've modelled it. Trouble is it don't look right. I do actually have another version in the pipeline and I'll sort out the reflection then. As regards the lens flare it looked pretty dull without it and most of the images I've seen taken from a similar angle to the sun have some sort of flare going on. Also I'm aiming for a filmic (particularly in the next version) look so the flare will stay for the moment.
Just need to make some models and I'll get started on the next version.
cheers
Richard
