Contains four full-visible sky celestial cartography charts at the back, all showing both hemispheres from the internal perspective, using the equatorial coordinate system. Charts are as follows: p. 52: Map of the visible sky January 21 to April 17 from New York latitude, p. 56: Map of the visible sky April 18 to July 21 from New York latitude, p. 60: map of the visible sky July 22 to October 31 from New York latitude, p. 64: Map of the visible sky November 1 to January 20 from New York latitude.
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