Thanks Marc... At first I thought that dark V shape was an optical issue, or something wrong with my flats etc... I did a search around online and found quite a few shots showing it.. I was impressed after that..
I do wish I'd got twice as much exposure to reduce the noise in the dust, however had I done that, I wouldnt have got the Eta Carine shot.. And I'm REALLY happy with that shot!
I compared it to my shot from december last year, there is NO comparison...