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Home Forums Observing and Imaging Group Vapour trails and seeing

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  • #18732
    Andy Sawers
    Topics: 134
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    The vapour trails in this evening’s sky reminded me I’d once heard that if they don’t dissipate but remain sharp and clean then the seeing is likely to be good at night.

    Makes sense. True? Have you heard that before?

    Topics: 39
    Replies: 597

    I dont know about vapour trails but I actually do keep an eye out for when it rains because after the rain, we tend to have decent seeing conditions from a “cleansed” atmosphere.   But I’d also like to know what other useful signs of good seeing conditions we can use.  Mike and Rupert are well knowledged in this area, hopefully they can give us tips?


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