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    Re: STARS below ?? declination are never visible.
    From: David Pike
    Date: 2017 Jan 25, 04:54 -0800

    GL you said: since there is an atmosphere (you can breathe after all), extenction dims a star's light near the horizon

    I have to admit, I was thinking geometrically.  I’d temporarily ignored atmospheric extinction.  Clearly, it too would have a significant effect on visibility of stars close to the observers horizon if not their geometry. DaveP

       
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