astap program / Forum / General discussions ASTAP: Auto extract of three colors at once

John Sikora - 2025-07-03

I saw the comment in the last version history about being able to extract RGB in one go. Where is that in the menu? I may be just blind but couldn't find the option.

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han.k - 2025-07-03

Remember you have to select the files first

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John Sikora - 2025-07-04

Thanks, got it.

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han.k - 2 days ago

Thanks, but note that the stars have to be unfocussed to some degree, to measure with 1/4 of the sensor area in red and blue. If the sharp peak of a focussed star is at one of the green pixels you will not measure very accurately red and blue. On the other side of the range, a too unfocused star will result in star detection failure.

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Auto extract of three colors at once