Star Finder: p. 10
The meridian is an imaginary line that runs from the
north point on the horizon through zenith and back down to the
south point on the horizon. Note that it includes the point
that the star map rotates around. The sky (and the
star finder's star map) rotate about the point called
the north celestial pole or NCP for short.
(Click here for another
explanation of these terms, but remember to return
Back here.)
Stars that are halfway between rising and setting are
on the meridian. A star that is crossing the meridian is said to culminate.
(Click here for another
explanation of this term, but remember to return
Back here.)
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