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those that are that distance from the South Pole never rise with us, but perform their course in the like order.
Azimuths are supposed lines, or circles of distance from the meridian, drawn from the zenith to any degree, or two degrees of the horizon, or according to the 32 points of the mariner’s compass, so that in travelling or sailing any way, supposing a circle to go from our zenith directly before us to the horizon, is the azimuth, called the vertical point, as well as the zenith.
Almicantharats, or Almadarats, or circles of Altitude, are imagined lines passing through the meridian parallel with the horizon.
The Sphere is a round body representing the frame of the whole world, as the circle of the heaven and the earth. This is sometimes called a martial sphere, for the orbs of the planets are called their spheres, that is, the circles in which they move.
Ascension is the rising of any star, or any part of the ecliptic above the horizon—Descension is its going down.
Right ascension of a star, is that part of the equinox that riseth or setteth with a star in the right sphere; but an oblique sphere, is that part of the equinoctial in degrees, containing between the first point of Aries, and that part of the equinoctial which passeth by the meridian with the centre of the star.
Oblique ascension is a part of the equinoctial in degrees containing between the beginning of Aries and that of the equinox, which rises with any star or part of the ecliptic in an oblique sphere.
Essential difference is the difference between
