G'day Jo, focus and tracking look good, but for 8 x 10 min, I suspect your black point is EXTREMELY clipped. Both the reflection and the emission nebulae of this object extend well beyond where you have stopped.
At the cost of a bit of noise and colour, see if you can extract more out of it, I'm sure it's there. You spent 80 minutes capturing those elusive photons, why not show them?
Baz.
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