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    Re: STARS below ?? declination are never visible.
    From: David Pike
    Date: 2017 Jan 26, 12:35 -0800

    Frank you said: I find that it's most useful to have a good understanding of the meridian altitude of the celestial equator, which is the same thing numerically; its 38° high.

    Wow! That took me a long time to get my head around.  Well ten minutes.  I see it now.  It’s the meridian altitude that a star on the Celestial Equator would have (i.e. a star of declination zero) for an observer at 52N. DaveP

       
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