Roof-Mounted Observatories available?

Hi Guys,

I have tons of trees around my 2-story house, and I want to have an observatory on the back-side of my roof. I don't plan to ever move (brother lives next door, sister across street). Are there any plans/pictures of what others have done that could show me what to give my contractor? Any advice suggestions would be especially appreciated.

If you have plans for doing this, please email me @ [email protected].

Many thanks, in advance!
David Long

Over at CN there is this rooftop dome that looks like it has turned out beautifully!!
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/1415617/page/0/view/collapsed/sb/5/o/all/fpart/1/vc/1