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True Pete if you go for exactly the intersection, but realistically you can drift from anywhere within about 5 deg either side of the CE so finding a bright enough star won't be a prob. The only thing I use my ToUcam 840 these days is for drift aligning and unless it's cloudy I've never found I can't find a star. Having said that though if the camera is going to double up as a guide camera then the ability to expose for about 2 sec is a definite bonus for both drift aligning and autoguiding.
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