Half Hours With the Telescope Electronic Resource Being a Popular Guide to the
Half Hours With the Telescope Electronic Resource Being a Popular Guide to the
Richard a Richard Anthony Proctor
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The primary is of the fourth, the companion of the eighth magnitude ; the former is yellow, the latter a ruddy purple. The period of e Hydras is about 450 years. ORION, LEPUS, TAURUS, ETC. 45 The constellation Leo Minor, now due east and about midway between the horizon and the zenith, is well worth sweeping over. Lib contains several fine fields. Let us next turn to the western heavens. Here there are some noteworthy objects. To begin with, there are the Pleiades, showing to the naked eye only... six or seven stars. In the telescope the Pleiades appear as shown in Plate 3. The Hyades also show some fine fields with low powers. Aldebaran, the principal star of the Hyades, as also of the constellation Taurus, is a noted red star. It is chiefly remarkable for the close spectroscopic analysis to which it has been subjected by Messrs. Huggins and Miller. Unlike Betelgeuse, the spec- trum of Aldebaran exhibits the lines corresponding to hydrogen, and no less than eight metals sodium, magnesium, calcium, iron, bismuth, tellurium, anti- mony, and mercury, are proved to exist in the con- stitution of this brilliant red star.
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