Although not now "cutting edge" I continue to use the ATiK 314L on my C11 (at f11) for spectroscopy.
Using a slit guider (basically on axis guiding) with a Lodestar I can hold the target star indefinitely on a 20 micron slit gap. Guiding using ArtroArt most of the time but PHD2 also works very well.
I use EQMod on my NEQ6pro mount.
HTH
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