So, last night I messed around with autoguiding. When my laptop battery died I took a few test snaps of various clusters. I had performed a two-star alignment, utilized three additional stars for calibration and had performed a precise polar alignment.
One interesting snap from last night is the shot above of the M45 Pleiades cluster is below. It's not wonderful, but this is the result of five four-minute exposures WITHOUT guiding. It's a testament to the CGEM mount for sure - four minute images without guiding and the stars are very nice and round. Managed to capture some nebulosity, too! (I have to say it's the best M45 shot I have taken, too!)
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