Thanks everyone, I appreciate the nice comments.
Martin, thanks. If there is progress, it's thanks to the high quality help I've been getting. Ryan has been giving me some much needed help with the f/4 already, not to mention the countless other areas I need help with
Hugh, you raise a good point. I will have to look into this.
Mike, thank you for those kind comments and advice. I have a bit of a tendency to add less colour saturation than what most other people would, but I'll give it a fair try. I always appreciate receiving tips. I hope you are enjoying your new dome.