[Half-hours with the Telescope by Richard A. Proctor]@TWC D-Link bookHalf-hours with the Telescope CHAPTER III 1/18
CHAPTER III. A HALF-HOUR WITH LYRA, HERCULES, CORVUS, CRATER, ETC. The observations now to be commenced are supposed to take place during the second quarter of the year,--at ten o'clock on the 20th of April, or at nine on the 5th of May, or at eight on the 21st of May, or at seven on the 5th of June, or at hours intermediate to these on intermediate days. We again look first for the Great Bear, now near the zenith, and thence find the Pole-star.
Turning towards the north, we see Cassiopeia between the Pole-star and the horizon.
Towards the north-west is the brilliant Capella, and towards the north-east the equally brilliant Vega, beneath which, and somewhat northerly, is the cross in Cygnus.
The Milky Way passes from the eastern horizon towards the north (low down), and so round to the western horizon. In selecting a region for special observation, we shall adopt a different plan from that used in the preceding "half-hour." The region on the equator and towards the south is indeed particularly interesting, since it includes the nebular region in Virgo.
Within this space nebulae are clustered more closely than over any corresponding space in the heavens, save only the greater Magellanic cloud.
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