{"id":97,"date":"2016-01-15T23:18:11","date_gmt":"2016-01-15T23:18:11","guid":{"rendered":"http:\/\/www.astronotas.org\/messier\/?p=97"},"modified":"2019-11-29T08:08:49","modified_gmt":"2019-11-29T12:08:49","slug":"m11","status":"publish","type":"post","link":"https:\/\/www.astronotas.org\/messier\/m11\/","title":{"rendered":"Messier 11"},"content":{"rendered":"\n
\"M11\"<\/a><\/figure>\n\n\n\n

Objeto: M11<\/strong><\/p>\n\n\n\n

Constelaci\u00f3n: Scutum
Fecha: 1994.08.28 | Hora: 0:46 UT
Lugar: Jauca, Santa Isabel, PR<\/p>\n\n\n\n

Tipo de objeto: C\u00famulo abierto, clase G
Nombre: C\u00famulo del Pato Salvaje, Wild Duck Cluster, NGC 6705
Magnitud: 5.8 | Tama\u00f1o: 14′
R.A. 18h51.1m | Dec. \u20136\u00b016′
\u00c9poca: 2000.0<\/p>\n\n\n\n

Instrumento: Meade MTS-SN 6
Ocular: 8.8 mm UWA | Aumento: 173x
Campo aparente: 84\u00b0 | Campo actual: 28′
Otros: lente Barlow 2x<\/p>\n\n\n\n

Carta en Uranometr\u00eda 2000.0: 295<\/p>\n\n\n\n

\"M11\"<\/a>
Hunter Wilson [origen<\/a>]<\/figcaption><\/figure>\n\n\n\n

Descripci\u00f3n<\/h3>\n\n\n\n

Espa\u00f1ol:<\/strong> Siendo un c\u00famulo abierto, M11 semeja m\u00e1s a un c\u00famulo globular que se puede resolver con extrema facilidad cuando es visto con poco aumento. La cantidad de estrellas que se ve en el grupo es dif\u00edcil de precisar, pues muchas de ellas son tenues y de dif\u00edcil observaci\u00f3n. Indudablemente, este es uno de los mejores c\u00famulos abierto, o gal\u00e1cticos, que existen. Algunos lo llaman el “C\u00famulo de los Patos Salvajes” porque les recuerda a una manada de estas aves en sus vuelos migratorios.<\/p>\n\n\n\n

English: <\/strong>Being an open cluster, M11 resembles more to a globular cluster that can be resolved very easily when viewed at low magnification. It is difficult to define the amount of stars that can be seeing within the cluster because a lot of them are faint and difficult to observe. Undoubtedly, this is one of the best open or galactic clusters in the sky. Some people call it the Wild Duck Cluster because it reminds them a flock of wild geese on their migratory journey.<\/p>\n\n\n\n

Comentario de Messier en 1771: <\/strong>La noche del 30 al 31 de mayo de 1764, descubr\u00ed, cerca de la estrella \u03ba de Ant\u00ednoo, un c\u00famulo de un gran n\u00famero de peque\u00f1as estrellas que se perciben con buenos instrumentos; utilic\u00e9 un telescopio gregoriano que aumentaba ciento cuatro veces. Cuando se examina con un anteojo ordinario de 3 pies y medio, este c\u00famulo de estrellas se parece a un cometa; el centro es brillante, es que hay entre estas pequellas estrellas una estrella de octava magnitud; dos otras, una de novena y de la d\u00e9cima: este c\u00famulo est\u00e1 entremezclado con una luz d\u00e9bil y su di\u00e1metro es de alrededor de 4 minutos de grado. Determin\u00e9 su posici\u00f3n en ascensi\u00f3n recta en 279\u00b0 35′ 43″ y su declinaci\u00f3n en 6\u00b0 31′ 1″ meridional.<\/p>\n\n\n\n

M. Halley reporta en las Transacciones Filos\u00f3ficas n.\u00ba 347, p\u00e1gina 390,<\/em> que M. Kirch hizo el descubrimiento de esta nebulosa en 1681, que esta precede el pie derecho de Ant\u00ednoo, que no es m\u00e1s que una mancha oscura, y que contiene una estrella que brilla bastante a trav\u00e9s de ella, que la hace m\u00e1s luminosa, su longitud estando en el Capricornio a 9 grados aproximadamente; con 17\u00b0 \u00bd de latitud norte. Esta nebulosa fue observada luego por M. Derham (Transacciones Filos\u00f3ficas, n.\u00ba 428, p\u00e1gina 70<\/em>), \u00e9l  reporta, luego de la traducci\u00f3n de su Memoria: \u00abDe seis nebulosas observ\u00e9 exactamente cinco con mi excelente telescopio de 8 pies de reflexi\u00f3n, y las encuentro a todas semejantes a un fen\u00f3meno, a excepci\u00f3n de aquella que precede el pie derecho de Ant\u00ednoo, que no es una nebulosa, sino un conglomerado de estrellas, m\u00e1s o menos semejante al que est\u00e1 en la v\u00eda l\u00e1ctea.\u00bb M. le Gentil habla tambi\u00e9n en las Memorias de la Academia de 1759, p\u00e1gina 469. <\/em>M. de Cheseaux se sirvi\u00f3 de un telescopio gregoriano de dos pies y de un anteojo de 25 pies de largo para examinar esta nebulosa de Ant\u00ednoo, que reconoci\u00f3 por ser un prodigioso c\u00famulo de peque\u00f1as estrellas; M. le Gentil hizo uso de un telescopio de 3 pies y de un anteojo ordinario de 20 pies de largo, haciendo por lo menos tanto efecto que el telescopio y el anteojo de M. Cheseaux; \u00e9l reconoce que esta nebulosa est\u00e1 mal terminada del lado del poniente, de suerte que imita muy bien de ese lado la cabellera de un cometa; solo percibi\u00f3 en el centro una sola estrella brillante que no se percibe tambi\u00e9n, dice \u00e9l, que con un anteojo de 8 pies. M. le Gentil piensa que M. de Cheseaux habr\u00e1 posiblemente confundido esta nebulosa con una nube vecina que contiene un n\u00famero prodigioso de peque\u00f1as estrellas.<\/p>\n\n\n\n

\"M11\"<\/a>
ESO [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n

Comentario de Messier en 1784: <\/strong>C\u00famulo de una gran cantidad de peque\u00f1as estrellas, cerca de la estrella K<\/em> de Ant\u00ednoo, que solo se ve con buenos instrumentos; con un anteojo ordinario de tres pies se parece a un cometa: este c\u00famulo est\u00e1 mezclado con una luz tenue; en este c\u00famulo hay una estrella de 8.va<\/sup> magnitud. M. Kirch lo observ\u00f3 en 1681.Transacciones Filos\u00f3ficas, n.\u00ba 347, p\u00e1gina 390.<\/em> Se refiere en el gran Atlas<\/em> ingl\u00e9s.<\/p>\n\n\n\n

Mapa para localizar a M11<\/strong><\/p>\n\n\n\n

\"Mapa<\/a>
Haga click para agrandar.<\/figcaption><\/figure>\n\n\n\n
\"M11\"<\/a>
NASA, ESA, STScI and P. Dobbie (University of Tasmania) [origen<\/a>]<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

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