Thanks Mike,
I realise that are out of focus but I believe it may be a number of factors. The Noise definately from using ISO1600 that is because of the need for higher shutter speed to reduce motion blur. Without tracking it is difficult to acheive clear focus. Also the barlow reduces light level and the maybe an issue with the particular one I have. 5-element 3 x barlow. I suppose it could be just bad seeing and heat.
Multiple images I will look into at my next project maybe next weekend but RAW imaging takes up so much memory, I need a bigger computer, possibly a new laptop.
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