Spot-on Al.
For the money it's top of my list for what you can do with it. Bang for buck it's a pearler.
But there's always those caveat's... "for the money" .... "good value" ...
It is what is it. Which is a great budget webcam that gives you a great starting point in astro imaging.
I love it and have only (in the last 24 hours) bought a great book to get even more out of mine before I move on to my next big purchase... most likely a Lumenera monochrome CCD camera with colour filters