Old 12-09-2010, 07:40 PM
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Paul Haese
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Paul Haese is offline
Join Date: Jan 2009
Location: Adelaide
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Thanks Peter, that explains it so well and succinctly.

Stuart, small pixels and long focal length means the wells fill quickly and there are more wells being filled per brighter star, that results in bloated looking stars. That combined with as you correctly pointed out guiding, atmospheric distortions etc makes for quite large stars. By way of example; if you were to use my RC with a 9 micron sensor your stars will appear much smaller than using a 5.4 micron sensor. Wells will take longer to fill and there are fewer pixels per the brighter stars with the 9 micron sensor. That is why using the QSI with the Tak produces such nice tight little stars generally as opposed to the narrow field scope.

I like you are talking about bloat and not bloom as you.
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