Mythology and history

Characteristics

Ophiuchus, is an enormous constellation that is located in the celestial equator very next to the nucleus of the Milky Route and in the opposed zone to Orion; he is observable during the months of April to October in both hemispheres without difficulty. It emphasizes as much by his drawn into squares form surrounded by stars in the east as in the west that represents Serpens or the serpent.

            The curiosity of Ophiuchus is that the ecliptic or the line where the Sun and the planets move crosses the constellation by the south during the first fortnight of December, therefore, in himself is a zodiacal but not recognized constellation like so since its South limit at first was assigned to Scorpius. In addition all the constellation is to 10º to the north of the galactic equator, therefore, in them we observed great amount of stars, stellar and like no, globular cluster.

          Ophiuchus limits of this with Serpens Caput (SCp), Libra and Scorpius, to the south with the constellation of Scorpius, to the west with the constellations of Sagittarius, Serpens Cauda (SCd) and Aquila; and finally to the north with Hercules.

             Ophiuchus was located the 17 of April of 1982 at the age of 14 years from the Majorcan locality of Inca, Spain.

Observations by telescope

        NOTE: One is in a very rich zone; it is formed by a pair slightly separated, and with a remarkable difference of brightness, it is unfolded without difficulty with the eyeglass of 50x.

            NOTE: One is in a rich zone; they are united, unfolding itself with the eyeglass of 100x, both components are white; one is one weak double of brightness and components of identical magnitude.

        NOTE: One is in a rich zone; a remarkable difference of brightness between the components exists, are something separated, the main one is white, however, the secondary one is red-orange; it turns out to be one pretty double.

        NOTE: One is M12; a precious globular cluster of Ophiuchus, is very dense, gradient, distinguishing itself two zones corresponding to the nucleus and to the periphery, it has a somewhat irregular aspect, his phantom is F7, is located to 5,500 pársec and the metalidad index is of 1.61.

        NOTE: One is a shining globular cluster, is more gradient and denser than M12, perfectly distinguish three zones of brightness corresponding to the nucleus, zone average and periphery; its phantom is F8, is located to 4,400 pársec and has an index of metalidad of -1.60.

            NOTE: One is in a partially rich zone; there is a remarkable difference of brightness between the components that profit not to identify its colors due in part to the weakness of brightness of secondary, the easy one to locate is unfolded with the eyeglass of 50x.

            NOTE: One is the third cluster of Ophiuchus in importance, is weaker, less granulated, but like in M10, also, three different zones from brightness are distinguished, their phantom is F8, is located to 10,200 pársec and has an index of metalidad of -1.39.

            NOTE: One is an enormous stellar cluster formed by eighty stars of weak magnitude its structure is formed by two angles of position corresponding to 30º and to 120º, they are, also, frequent the alignments in H. The phantom of the youngest component is B3 and has an age of thirty and six million years.

            NOTE: One is to only 40' to the west of r Ophiuchi, is a slight difference of brightness, are partially separated, is unfolded without difficulty with the eyeglass of 50x, one is about one double brilliant and white components.

                NOTE: One is in a partially rich zone; there is a remarkable difference of brightness, although it is formed by very shining components, the main one is orange, however, the secondary one is red, is one pretty double, is unfolded without difficulty with 50x.

            NOTE: One is in a rich zone; there is a remarkable difference of brightness between the components, although both are very shining and blue; they are very separated, almost 1'; therefore, it is unfolded without difficulty with the eyeglass of 50x.

                NOTE: One is a triple easy to identify and of weak components of brightness, they have a slight difference of brightness although very little; component AB is unfolded with 100x, however, AB-C is unfolded with 50x; the main one is white, secondary the blue one, and the tertiary yellow, although due to the little brightness of the components profit not to be able to determine the certainty of it.

            NOTE: One is in a rich zone; there is a slight difference of brightness between the components, are very united being needed an eyeglass 200x and in addition a good atmospheric transparency, both components are white.

                NOTE: One is in a rich zone; its identification is not difficult due to the small cluster that there is in him; its disc is elliptical, and brilliant to average that we approached the star cause that is of magnitude 13.6; the phantom of the star is Of+WR; is located to 600 pársec.

                NOTE: One is a precious and enormous stellar cluster. It has form of question, frankly very suggestive; it is formed by eighty stars; is located to 320 pársec, does not have a concentration towards the center, has a moderate difference of brightness, the phantom of the youngest star is B6 and has an age of 660 million years.

                NOTE: One is the following globular cluster in importance of the saga of the Ophiuchus, appears weaker, smaller and with two zones of luminosity corresponding to the nucleus and the periphery; its phantom is F3, pársec is to about 7,000 and has an index of metalidad of -1.78.

                NOTE: It follows the saga, although this one was not discovered by Messier. Of reduced dimensions more and less spectacular one appears small and subtle; a gradual diminution of brightness is distinguished as we moved away of the nucleus and we deepened in the periphery; it is a older globular cluster, of G5 phantom, is located to a distance of 17,200 pársec and with an index of metalidad of -0.62.

            NOTE: One is in a rich zone; one is a weak, small stellar cluster formed by ten stars, is located to 2,800 pársec and dispersed.

               NOTE: One is in a relatively poor star field, is a slight difference of brightness between the components, are very united being needed the eyeglass 200x to unfold it and to observe both blue components, is not complicated the identification due to its brightness.

                NOTE: One is a very pretty globular cluster, has a off-white color, I consider a gradient of 6, (1-10); one is an cluster perfectly to regulate and little dense; phantom is F5, is located to 10,600 pársec and has an index of metalidad of -1.68.

                NOTE: One is in a partially rich field, 6; it has a off-white color, with a gradient of 3 (1-10); that is to say, the luminosity diminishes very little as we moved away of the nucleus, is a very pretty globular cluster, with an elevated density, its phantom is F8, is located to 6,000 pársec, with an index of -1.28.

               NOTE: One is in a partially rich zone, 7; there is a remarkable difference of brightness between the components, are partially united, the main one is red, however, the secondary one is white; it is possible to emphasize the surprising red color of the main one, one is one very good double, is unfolded with the eyeglass of 200x.

                NOTE: One is in a partially rich zone, 6; there is a remarkable difference of brightness between the components, is unfolded without difficulty with the eyeglass of 50x, the main one is white, however, the secondary one is bluish.

                NOTE: One is in a partially rich zone, 6; there is a small difference of brightness between the components, is one weak double of brightness and not very together, it is unfolded with 50x, both components are white.

            NOTE: One is in a rich zone; there is a slight difference of brightness between his components, are something separated, the main one is orange, however, the secondary one is yellow. It is unfolded without difficulty with the eyeglass of 50x.

            NOTE: One is in a partially rich zone; there is a remarkable difference of brightness, are very separated, almost 1'; the main one is red, however, the secondary one is white, although I am not absolutely safe, easy to locate, is unfolded with the eyeglass of 50x

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            NOTE: One is in a rich zone; there is a smallest difference of brightness between the components, are very separated, unfolding itself with the eyeglass of 50x, the main one I see it orange, however, profit not to identify the color of the secondary one.

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