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    Re: Which stars are circumpolar at 52 N?
    From: Brad Morris
    Date: 2019 May 29, 13:44 -0400
    Herman

    You asked if stars above 38°N declination at 52°N are circumpolar.

    Yes.  Yes they are cicumpolar, albeit barely.  A star at 38°N, on the meridian 180° in longitude from your longitude, would be 90° from your zenith, or at 0° altitude.  Refraction at that altitude, combined with the extinction would make it a very tricky observation.  It is not really useable at that altitude, but would be just at the horizon.  So yes, circumpolar.

    Brad



    On Wed, May 29, 2019, 1:33 PM Herman Dekker <NoReply_Dekker@fer3.com> wrote:

    Few years ago I learned from Navlist that at my Latitude 52°N
    stars with Dec below S 38°  are never visible.
    I wondered if every star with Dec above N 38°are for me Cicumpolair?

    HermanD

       
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