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That is some really nice detail Paul! It is an interesting comparison Re-Fainter halos.
Both scopes are 12". F/3.8 vs F/8. Pixel size is 9 vs 4.54. QE is ~ .6 vs maybe .45 at a guess.
Assuming both systems are read noise limited, you would need 2x the exposure time to get the same SNR on fainter areas. I imagine that with a 11002 sensor it would need far more than 20 minutes to reach that point at F/8 though. At a guess I would say that it is the sensor read noise that is the limiting factor.
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