Anyway.. im sure I read somewere that someone was after the orbital drydocks in Start Trek and I happened to find a website that has them as well as various other models(Starwars, V etc).
Also there are models for Red Dwarf and Starbug.
I have no idea atm how to deal with models and celestia so ill leave it to someone else, but if some one takes up the challenge keep us up to date
the website: http://www.geocities.com/hgibbens/Index.html