Hi Bert,
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It is very simple Humayan I don't like half baked assertions and or glib statements
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So then you go on to make some...
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It tends to make me over react.
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No kidding.
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You are one of the few that puts up images at high resolution. They are all very good.
Rational critique is always welcome. I know for a fact that to get pin point stars on a full frame sensor is difficult. I have modified all my optics to address this problem apart from the Canon 300mm F2.8L. If I want pinpoint stars with no nebulosity I will get myself an f/20 optic. It is about balance and compromises.
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Now I see what you were on about, you wanted to get the nebulosity, in which case f ratio is the governing factor, the minor flaws in the image from optics were secondary.
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It would be a sad day if we all agreed all the time.
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Agreed, no I meant disagree, I'll come in again...
Cheers
Stuart