IMHO there is a lot of BS surrounding this thread.
This year's (and many other) David Malin Award deep sky winners used a SBIG.
As do Gendler, Cronman, Block et. al. Just take a look at any gallery section of S&T, Astronomy, AS&T.
You can ruminate as much as you like, but the SBIG system works extremely well.... name any other company that offers integrated AO that can be used ahead (via a MOAG) of the filter wheel. Duh...none?
Sorry...getting cranky in my old age.
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