{"id":100,"date":"2016-01-17T16:42:30","date_gmt":"2016-01-17T16:42:30","guid":{"rendered":"http:\/\/www.astronotas.org\/messier\/?p=100"},"modified":"2023-12-09T11:58:52","modified_gmt":"2023-12-09T15:58:52","slug":"m13","status":"publish","type":"post","link":"https:\/\/www.astronotas.org\/messier\/m13\/","title":{"rendered":"Messier 13"},"content":{"rendered":"\n
\"M13\"<\/a><\/figure>\n\n\n\n

Objeto: M13<\/strong><\/p>\n\n\n\n

Constelaci\u00f3n: H\u00e9rcules
Fecha: 1994.06.12 | Hora: 6:33 UT
Lugar: Hacienda La Esperanza, Manat\u00ed, PR<\/p>\n\n\n\n

Tipo de objeto: C\u00famulo globular, clase V
Nombre: C\u00famulo de H\u00e9rcules, NGC 6205
Magnitud: 5.9 | Tama\u00f1o: 17′
R.A. 16h41.7m | Dec. +36\u00b028′
\u00c9poca: 2000.0<\/p>\n\n\n\n

Instrumento: Meade MTS-SN 6
Ocular: 25 mm MA | Aumento: 30x
Campo aparente: 40\u00b0 | Campo actual: 1\u00b020′
Otros:<\/p>\n\n\n\n

Carta en Uranometr\u00eda 2000.0: 114<\/p>\n\n\n\n

\"M13\"<\/a>
John Mirtle [origen<\/a>]<\/figcaption><\/figure>\n\n\n\n

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

Espa\u00f1ol:<\/strong> Poco es lo que se puede decir de M13; m\u00e1s vale echarle un vistazo para apreciarlo con veradero gusto. El c\u00famulo es bastante grande, denso y brillante, y puede resolverse, parcialmente, hasta con poco aumento. En el dibujo se ve peque\u00f1o porque el campo de visi\u00f3n que ofrece el ocular es de casi un grado y medio, y el aumento es, solamente, 30x.<\/p>\n\n\n\n

English: <\/b>Not much can be said of M13; it’s better to check it out to really appreciate. The cluster is quite large, dense and bright, and it’s partially resolved, even at low magnification. It looks small in the drawing because the field of view is almost a degree and a half, and the magnification is only 30x.<\/p>\n\n\n\n

\"M13\"<\/a>
Adam Block\/Mount Lemmon SkyCenter\/University of Arizona. [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n

Cometarios de Messier en 1771: <\/strong>La noche del 1.ro<\/sup> al 2 de junio de 1764, descubr\u00ed una nebulosa en la cintura de H\u00e9rcules, me asegur\u00e9 que no contiene ninguna estrella; habi\u00e9ndola examinado con un telescopio newtoniano de cuatro pies y medio, que aumentaba sesenta veces, es redonda, bella y brillante, el centro m\u00e1s claro que los bordes: se divisa con un anteojo ordinario de un pie, puede tener de di\u00e1metro tres minutos de grado: est\u00e1 acompa\u00f1ada de dos estrellas, una y otra de la novena magnitud, localizadas, una arriba y otra debajo de la nebulosa, y un poco alargada. Determin\u00e9 su posici\u00f3n por su paso por el meridiano, compar\u00e9 con el de la estrella \u03b5 de H\u00e9rcules; su ascensi\u00f3n recta fue concluida de 248\u00b0 18′ 48″ y su declinaci\u00f3n de 36\u00b0 54′ 44″ boreal.<\/p>\n\n\n\n

Se reporta en las Transacciones Filos\u00f3ficas, n.\u00ba 347, p\u00e1gina 390,<\/em> que M. Halley descubri\u00f3 por casualidad esta nebulosa en 1714: est\u00e1, dice \u00e9l, casi en l\u00ednea directa con \u03b6 y \u03b7 de Bayer, un poco m\u00e1s cerca de la estrella \u03b6 que de \u03b7, y comparando su situaci\u00f3n entre las estrellas, su localizaci\u00f3n es bastante cerca en \u264f26\u00b0 \u00bd con 57 grados de latitud norte, no es m\u00e1s que una peque\u00f1a mancha; pero se ve bien sin anteojo cuando el tiempo es bueno y no hay claro de Luna.<\/p>\n\n\n\n

Comentarios de Messier en 1783:<\/strong> Nebulosa sin estrella, descubierta en la cintura de H\u00e9rcules; es redonda y brillante, el centro m\u00e1s claro que los bordes, se percibe con un anteojo de un pie; est\u00e1 cerca de dos estrellas, una y otra de 8.va<\/sup> magnitud; una encima y otra debajo: la nebulosa ha sido determinada compar\u00e1ndola con \u03b5 de H\u00e9rcules. M. Messier la refiere en la carta del cometa de 1779, que ser\u00e1 insertada en el volumen de la Academia de este a\u00f1o. Vista por Halley en 1714. Vuelta a ver los 5 & 30 de enero de 1781. Se refiere en el Atlas celeste<\/em> ingl\u00e9s.<\/p>\n\n\n\n

Mapa para localizar a M13<\/strong><\/p>\n\n\n\n

\"Mapa<\/a>
Haga click para agrandar.<\/figcaption><\/figure>\n\n\n\n
\"M13\"<\/a>
T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOAO\/AURA\/NSF) [origen<\/a>] <\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

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