A friend and I built one a few years back about the size you are talking about (as a prototype... Its big brother should be coming into existence this summer :-P) We didn't do that many calculations, just read a bit and played with the simulator to get a good idea of what was going on. There's...
I'll have to reiterate 47 Tuc and Omega C... Just incredible even in a small scope. I also love the triffid neb. So much structure in a small scope. And M42 of course...
Ahhh... I've spent a bit of time on this topic, particularly in relation to Zcars. It's a relatively simple procedure to pull out your ECU, desolder the ROM chip and put in a socket. You can then get some new chips, a program called RomEdit, a rom burner and some bin files and you'll be on your...