{"id":92,"date":"2016-01-14T23:21:09","date_gmt":"2016-01-14T23:21:09","guid":{"rendered":"http:\/\/www.astronotas.org\/messier\/?p=92"},"modified":"2023-12-09T11:53:06","modified_gmt":"2023-12-09T15:53:06","slug":"m8","status":"publish","type":"post","link":"https:\/\/www.astronotas.org\/messier\/m8\/","title":{"rendered":"Messier 8"},"content":{"rendered":"\n
\"M8\"<\/a><\/figure>\n\n\n\n

Objeto: M8<\/strong><\/p>\n\n\n\n

Constelaci\u00f3n: Sagittarius
Fecha: 1995.04.30 | Hora: 6:44 UT
Lugar: Bo. Jauca, Santa Isabel, PR<\/p>\n\n\n\n

Tipo de objeto: Nebulosa de emisi\u00f3n
Nombre: Nebulosa de la Laguna, NGC 6523
Magnitud: 5.8 | Tama\u00f1o: 50′ x 30′
R.A. 18h03.8m | Dec. \u201324\u00b023′
\u00c9poca: 2000.0<\/p>\n\n\n\n

Instrumento: Meade MTS-SN 6
Ocular: 8.8 mm UWA | Aumento: 87x
Campo aparente: 84\u00b0 | Campo actual: 57′
Otros: filtro nebular (narrowband)<\/p>\n\n\n\n

Carta en Uranometr\u00eda 2000.0: 339<\/p>\n\n\n\n

\"M8\"<\/a>
NOAO\/AURA\/NSF [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n

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

Espa\u00f1ol:<\/strong> M8, la “Nebulosa de la Laguna”, es una nebulosa de emisi\u00f3n localizada en la constelaci\u00f3n de Sagitario. A trav\u00e9s de binoculares, se ve como una peque\u00f1a nube de luz. Con el telescopio, a 30x, se ve mejor, junto al c\u00famulo abierto NGC 6530. A 127x, no es posible ver toda la nebulosidad dentro del mismo campo de visi\u00f3n, pero la vista que ofrecen M8 y NGC 6530 es espl\u00e9ndida. Parte de la Laguna, la nebulosa oscura que atraviesa el \u00e1rea iluminada (y es la que le da el nombre caracter\u00edstico a este objeto) separa el centro brillante de M8 de la regi\u00f3n que rodea al c\u00famulo. Usando un filtro nebular, M8 luce m\u00e1s extensa, pr\u00e1cticamente abarca toda el \u00e1rea que se revela en las fotograf\u00edas de este objeto. Por su parte, las estrellas de NGC 6530 son blancas, y aunque no son tan abundantes como otros c\u00famulos, su oportuna proximidad a M8 lo convierte en uno de los mejores que se puedan observar. La nebulosa oscura B89 es la que separa el c\u00famulo del centro m\u00e1s brillante de la nebulosa de emisi\u00f3n. Otras dos \u00e1reas oscuras (a la izquierda y derecha del centro) podr\u00edan ser B88 y B296. El dibujo de M8 que incluimos fue hecho el 30 de abril de 1995, pero las observaciones que se resumen corresponden a una observaci\u00f3n efectuada el 5 de agosto de 1991.<\/p>\n\n\n\n

English: <\/strong>M8, the Lagoon Nebula, is an emission nebula in Sagittarius. Through binoculars, it looks like a small greyish cloud. Through the telescope at 30x it looks a lot better, and you can also detect the open cluster NGC 6530 at its heart. At 127x it isn’t possible to view the entire nebula in a single field of view, but the vista is simply splendid. Part of the lagoon (the dark nebula that crosses the illuminated area and which gives this object its name) separates the bright center from the region that surrounds the cluster. Using a narrowband filter, M8 looks bigger and more luminous, covering the whole nebulous structure seeing in photographs. Meanwhile, the stars in NGC 6530 are white, and even though they are not as numerous as in some other clusters, their association with M8 make NGC 6530 to stand out as one of the best open clusters for any telescope. The dark nabula B89 separates the cluster from the center of the emission nebula. Another two dark regions (one at the left and the other at the right of M8’s center) could be B88 and B296. The sketch of M8 was made on 30 April 1995, but the notes dates from 5 August 1991.<\/p>\n\n\n\n

\"M8\"<\/a>
Adam Block\/Mount Lemmon SkyCenter\/University of Arizona [origen<\/a>]<\/figcaption><\/figure>\n\n\n\n

Comentario de Messier en 1771:<\/strong> Asimismo, determin\u00e9, la misma noche, la posici\u00f3n de un peque\u00f1o c\u00famulo de estrellas que se ve en forma de una nebulosa, cuando se observa con un anteojo ordinario de 3 pies; pero cuando se emplea un buen instrumento se nota una gran cantidad de peque\u00f1as estrellas: junto a este c\u00famulo hay una estrella bastante brillante que est\u00e1 rodeada en una luz muy d\u00e9bil: esta es la novena estrella del Sagitario, de s\u00e9ptima magnitud, seg\u00fan el cat\u00e1logo de Flamsteed: este c\u00famulo parece de forma alargada que se extiende de noreste a suroeste. Observ\u00e9 su posici\u00f3n por su paso por el Meridiano, la cual compar\u00e9 con la de la estrella \u03b4 del Sagitario, y determin\u00e9 su ascensi\u00f3n recta en 267\u00b0 29′ 30″ y su declinaci\u00f3n en 24\u00b0 21′ 10″ meridional. Este c\u00famulo de estrella puede tener de extensi\u00f3n, de noreste a suroeste, sobre 30 minutos de grado.<\/p>\n\n\n\n

Comentario de Messier en 1784: <\/strong>C\u00famulo de estrellas que parece una nebulosa cuando se observa con un anteojo ordinario de tres pies; pero con un instrumento excelente se nota una gran cantidad de peque\u00f1as estrellas: junto a este c\u00famulo hay una estrella bien brillante, rodeada de una luz bien tenue; es la novena estrella del Sagitario, de s\u00e9ptima magnitud seg\u00fan Flamsteed: este c\u00famulo tiene una forma alargada que se extiende de noreste a suroeste, entre el arco del Sagitario y el pie derecho de Ofiuco.<\/p>\n\n\n\n

Mapa para localizar a M8<\/strong><\/p>\n\n\n\n

\"Mapa<\/a>
Localizaci\u00f3n de M8<\/figcaption><\/figure>\n\n\n\n
\"M8\"<\/a>
ESO\/Digitized Sky Survey 2 [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n
\"M8\"<\/a>
ESO\/VPHAS+ team [origen<\/a>] <\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

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