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Thread: Moon clearly visible for entire day?

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    Question Moon clearly visible for entire day?



    I wish I took a picture of this, but yesterday the moon was clearly visible and very large for almost the entire day, from morning until at least late afternoon or early evening here in Western Pennsylvania. It was not full, perhaps 3/4 full, but I recall wondering why it was so clear in the midday sun when typically the daylight will overwhelm the light of the moon. Any clues as to why this happens and how often it happens?

    The skies were exceptionally clear, but we have plenty of such days and I can't say I recall such a distinct view.

    Also, would anyone recommend against viewing a midday moon through a telescope collimated for night sky observation?
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    Default Re: Moon clearly visible for entire day?

    There's a fairly complete explanation here: When can you see a daytime moon? | Human World | EarthSky

    There's no reason not to use a scope on the moon during daytime, but you'll get better contrast at night.
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    Default Re: Moon clearly visible for entire day?

    I had clear skies in the morning on Sunday and Monday so was doing some lunar observing during morning coffee with the 15x70s.
    Always a nice target
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    Default Re: Moon clearly visible for entire day?

    I had the same thing here. The Moon was at the Zenith here when the Sun rose, so I saw it until about 2:00 PM, when it went behind some trees
    And you can use a scope on it in the daytime; it even sort of comes out in a picture:
    Waiting for work Moon

    Enjoy the daytime observations!
    All the best,
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    Default Re: Moon clearly visible for entire day?

    Quote Originally Posted by TheFatKitty View Post
    I had the same thing here. The Moon was at the Zenith here when the Sun rose, so I saw it until about 2:00 PM, when it went behind some trees
    And you can use a scope on it in the daytime; it even sort of comes out in a picture:
    Waiting for work Moon

    Yeah that is so funny. Saw the Moon at around 2pm today as well and was thinking that's the latest in a day I could ever recall seeing it

    Enjoy the daytime observations!
    All the best,
    Mark
    Yeah that is so funny. Saw the Moon at around 2pm today as well and was thinking that's the latest in a day I could ever recall seeing it
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    Default Re: Moon clearly visible for entire day?

    Always a nice target
    Morning coffee is a NICE target, impossible to miss any day
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    Default Re: Moon clearly visible for entire day?

    You guys are giving me a 'Jones' for the Moon. Any other time I would have been able to watch it with you but the clouds are so thick here. I was trying to burn a hole through them with my laser pointer but it doesn't work. :-)
    I think this post is the first post in 6 months that has given me that golly-gee-whiz feeling of envy. :-)
    I enjoyed the picture you took of it the other morning, Mark.
    Mark

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    Default Re: Moon clearly visible for entire day?

    I wish it appeared that way every day. It added some dramatic cosmic character to the daytime sky.

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    Default Re: Moon clearly visible for entire day?

    Quote Originally Posted by ProfEclipse View Post
    There's a fairly complete explanation here: When can you see a daytime moon? | Human World | EarthSky

    There's no reason not to use a scope on the moon during daytime, but you'll get better contrast at night.

    According to that resource, the waning gibbous phase is when that should happen and it just so happens that the moon was in that phase on that day. I remember when I saw it, I asked Siri on my Apple Watch "Why is the moon visible right now?" and the response was "The moon is in the waning gibbous phase."

    So, thanks Prof! (And thank you, Siri)
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    Default Re: Moon clearly visible for entire day?

    Lunar observing is the bee's knees. It's fascinating to observe. When you consider that it's 'in the way' for half of its cycle, you may as well put a scope on it and 'walk' around.

    Here's a handy lunar reference. It's a great visual to explain to people about the phases of the moon.


    Lunar Cycle Image.jpg
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