Thanks guys for trying to help, and Geoff what you explained in regard to refractors, i was not aware of, and will look into this, other than that i expect i will just keep going.
As Bert actually said to me a short while ago," Leon, you are getting there, you have a full tank of fuel and half a pack of smokes, just go for it".
I took it that he was saying, just keep at it and finally you will get there, good advice i reckon.
Just another point that i would like to make here is this, the image we are talking about looks quite fine on my monitor, and it is really hard to detect any noise, so i suspect that it will appear different on other monitors, bringing out the noise etc
Leon
