Northern Hemisphere

Serpens Serpentis (Ser)

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Serpens is a unique constellation, as it is split into two—Serpens Caput, the head, and Serpens Cauda, the tail. Both halves count as a single constellation. It represents a huge snake coiled around Ophiuchus, who grasps the body in his left hand and the tail in his right. One of the original 48 Greek constellations, Serpens is linked in legend with the constellation Ophiuchus. The latter represents Asclepius, who was a great healer, reputedly able to revive the dead. In Greek myth, snakes were a symbol of rebirth, owing to the fact that they shed their skins. the serpent northern hemisphere northern hemisphere

M5 K 5 One of the finest globular clusters in the northern sky. Binoculars show it as a hazy patch about half the apparent size of a full moon. Apertures of 4 in (100 mm) or so reveal curving chains of stars in its outskirts.

M16 K 5 S 3 A star cluster that can be seen easily through binoculars and small telescopes as a hazy patch covering an area of sky similar to a full moon. It lies within the Eagle Nebula, which was made famous by a spectacular Hubble Space Telescope picture showing dark columns of dust within its glowing gas.

iC 4756 K A good open cluster for binoculars, about twice the size of M16, lying near the tip of the serpent's tail.

globular cluster M16

The Eagle Nebula surrounding the star cluster M16 is seen well only through larger apertures or on photographs and CCD images.

Ophiuchus Ophiuchi (Oph)

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