[PeterM]

Hi Steve,
Here goes,
What I did was (Southern end) section off & frame 1.2meters of the Eastern wall of the observatory running diagonally from East to West, coming back to about 800mm on the Western side next to my main observatory door. This gave me plenty of room to fit my Desk (1.2w x 880mm deep) 2 LCD monitors (wall mounted), DVD/TV/Stereo (above desk) the 2 laptop computers, some mood lighting, a weather station, did I miss anything? Oh yeah a telephone. Inside the observatory I put in a frame about 180mm below the height of the walls. I then put 15mm panelling across that frame as a roof, this gives me extra storage space above me. I soon got used to ducking when I go in there - I sit in a chair anyways. 12mm wall panelling extends from the Eastern wall to where you see the curtain. The curtain material (stapled to the frame above) forms the door to the warm room and is heavy stage curtaining (you can buy it in spotlight), it keeps the warmth in winter (from screens, computers etc) and the mozzies out in Summer (I have a fan, as well as a bookshelf behind where I sit). The scope is a 12inch LX200R with a dew shield and yes there is plenty of room for it to do a 360 rotate. The internal framing also adds substantial strength to the observatory structure.
Ok, it looks like mission control (the Tardis) but everything has its function and is only lit up here for effect. I spend a lot of time down there (104 nights last year) so I want creature comforts. I know a few who have built in a separate window between them and the scope but the curtain is all I need. Sure, I can control it all from in the house if I wanted (and I don't at this stage) this is like having your own home theatre in the backyard.
Hope this is of some use.
PeterM.