The Clear Sky Chart for my area indicates a long clear night coming up. So after going to the local fireworks display, I hope to get the scope out and aligned and sort out Liveview focusing! I've posted a question on Canon DSLR Digital Astro Yahoo tech groups and gotten several helpful suggestions. I also reviewed Jerry Lodriguss's website on using Liveview for focusing and I think based on all this I was very close the other night.
I believe my biggest problem was not getting the prefocus close enough to correct before attempting to use Liveview with the wide angle lens. Tonite I will prefocus on the crescent moon in AF mode at ISO 1600, then keep the focus unchanged, switch to MF and Bulb and then put the camera on Vega to try focusing on the brightest star visible at that time of night.
The article on Jerry's website can be found at:
I suspect others have had the same problem as beginners. I will update the journal tomorrow to report on my success, hopefully with photos!