Astronomy for amateurs . ORVUS HYDRA ^ . J Fig. io.—The Constellations of the Zodiac: summer and autumn;Capricorn, Archer, Scorpion, Balance, Virgin, Lion. of the Zodiac and the Southern Constellations are not,like those w^hich are circumpolar, perpetually visibleat all periods of the year. Their visibility depends onthe time of year and the hour of the night.^ In order to admire the fine constellations of theNorth, as described above, v^e have only to open our * All the stars visible at any hour during the year can easily be found withthe help of the authors Planisphere mobile. 46 THE CONSTEL
Astronomy for amateurs . ORVUS HYDRA ^ . J Fig. io.—The Constellations of the Zodiac: summer and autumn;Capricorn, Archer, Scorpion, Balance, Virgin, Lion. of the Zodiac and the Southern Constellations are not,like those w^hich are circumpolar, perpetually visibleat all periods of the year. Their visibility depends onthe time of year and the hour of the night.^ In order to admire the fine constellations of theNorth, as described above, v^e have only to open our * All the stars visible at any hour during the year can easily be found withthe help of the authors Planisphere mobile. 46 THE CONSTELLATIONS windows on a clear summers evening, or walk roundthe garden in the mysterious light of these inaccessiblesuns, while we look up at the immense fields in whicheach star is like the head of a celestial spear. But the summer is over, autumn is upon us, andthen, too soon, comes winter clothed in days are short and cold, dark and dreary; but asa compensation the night is much longer, and adorns j^cheat. SiriusH * Fig. II.—The Constellations of the Zodiac : winter and spring ; Crab,Twins, Bull, Ram, Fishes, Water-Carrier. herself with her most beautiful jewels, offering us thecontemplation of her inexhaustible treasures. First, let us do homage to the magnificent Orion,most splendid of all the constellations: he advances likea colossal giant, and confronts the Bull. This constellation appears about midnight in No-vember, in the south-eastern Heavens; toward eleven 47 ASTRONOMY FOR AMATEURS oclock in December and January, due south; aboutten in February, in the south-east; about nine in March,and about eight in April, in the west; and then setsbelow our horizon.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectastronomy, bookyear19
