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I was toying with adding some sort of quantitative estimate of seeing to my set up routine recently (e.g. Maxim FWHM value on an image of 1 second or so on say a 5th mag star). Haven't played with it too much as I expect it could change lots during the night as scope cools and local conditions change (hopefully improve). Supposedly on a long exposure such values are relatively meaningless as they reflect worse case over many "wobbles".
Does anyone routinely try to measure their seeing, or is it just something you learn to gauge by experience?
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