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I am surprised by these results. I thought the whole point of an AO unit was to help get tight stars in weak seeing. If it doesn't do that and adds some CA then that is pretty pathetic.
Martin Pugh is getting amazing results from an SBIG AOX unit at Sierra Remote. Peter Ward's recent Eagle shows AO benefits even at moderate focal length.
So is this more the SX unit is not very good?
Greg.
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