Recreations in Astronomy eBook

This eBook from the Gutenberg Project consists of approximately 235 pages of information about Recreations in Astronomy.

Recreations in Astronomy eBook

This eBook from the Gutenberg Project consists of approximately 235 pages of information about Recreations in Astronomy.

Fig. 70 continues eastward.  Note the sickle in the head and neck of the Lion.  The star b is Denebola, in his tail.  Arcturus appears by the word Bootes, at the edge of the map.  These two stars make a triangle with Spica, about 35 deg. on a side.  The geometric head of Hydra is easily discernible east of Procyon:  The star g in the Virgin is double, with a period of 145 years. z is just above the equinoctial.  There is a fine nebula two-thirds of the way from d to ae, and a little above the line connecting the two.  Coma Berenices is a beautiful cluster of faint stars.  Spica rises at 9 o’clock on the 10th of February, at 5 o’clock A.M. on the 6th of November.

[Page 205] [Illustration:  Fig. 7l.—­Arcturus comes to the Meridian, 70 deg. from the Pole, at 10 o’clock May 25th, 9 o’clock June 9th, and at 8 o’clock June 25th.]

Fig. 71 represents the sky to the eastward and northward of the last.  A line drawn from Polaris and Benetnasch comes east of Arcturus to the little triangle called his sons.  Bootes drives the Great Bear round the pole.  Arcturus and Denebola make a triangle with a, also called Cor Coroli, in the Hunting Dogs.  This triangle, and the one having the same base, with Spica for its apex, is called the “Diamond of the Virgin.”  Hercules appears head down—­a in the face, b, g, d; in his shoulders, p; and ae; in the loins, t in the knee, the foot being bent to the stars at the right.  The Serpent’s head, making an X, is just at the right of the g of Hercules, and the partial circle of the Northern Crown above.  The head of Draco is seen at b on the left of the map.  Arcturus rises at 9 o’clock about the 20th of February, and at 5 A.M. on the 22d of October; Regulus 3h. 35m.  Earlier.

[Page 206] [Illustration:  Fig. 72.—­Altair comes to the Meridian, 82 deg. from the Pole, at 10 o’clock P.M.  August 18th, at 9 o’clock September 2d, and at 8 o’clock September 18th.]

Fig. 72 portrays the stars eastward and southward.  Scorpio is one of the most brilliant and easily traced constellations.  Antares, a, in the heart, is double.  In Sagittarius is the Little Milk-dipper, and west of it the bended bow.  Vega is at the top of the map.  Near it observe z, a double, and e, a quadruple star.  The point to which the solar system is tending is marked by the sign of the earth below p; Herculis.  The Serpent, west of Hercules, and coiled round nearly to Aquila, is very traceable.  In the right-hand lower corner is the Centaur.  Below, and always out of our sight, is the famous a Centauri.  The diamond form of the Dolphin is sometimes called “Job’s Coffin.”  The ecliptic passes close [Page 207] to b of Scorpio, which star is in the head.  Antares, in Scorpio, rises at 9 o’clock P.M. on May 9th, and at 5 o’clock A.M. on January 5th.

[Illustration:  Fig. 73.—­Fomalhaut comes to the Meridian, only 17 deg. from the horizon, at 8 o’clock November 4th.]

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