Not too shabby Klaus, that horsey head is a faint object hey, that'l test your capturing technique mate - long time no see by the way
I know you have reasons for shooting at ISO 200 but I believe youll need IS0 800 to get more faint dust and consequently raising you Signal to Noise ratio
I do like the colours in the Orion you have captured
Tracking/Guiding is great by the looks too
Rgrds