Sorry mate, I have a 1000D that even knows when I come in the room I have it set up in. I can almost hear the focus ring start to move. I have been thinking of going to a better quality telephoto, but for astro work they are well beyond my budget. One thing that I have been using lately is BackyardEOS but that’s only good for when I don’t mind lugging the laptop around (and I stand to be corrected but the 450D does not have live view so its use would be limited, at least in the focusing area). For normal through the viewfinder or live view focusing I put my trust in God, which is most unfortunate because I am an atheist.
