Grampian Stars:
Robert: Your design inspired my observatory. I saw a picture of it somewhere and noticed the drop-down sides. But couldn't find it again so just used it as an inspiration. Mine is 10x12 and works great. Really like the openness you get with the sides down (great for star parties) but the wind protection where it is needed.

So, thanks for the inspiration! I will post a picture of mine when I have one!