{"id":554,"date":"2016-02-17T15:56:47","date_gmt":"2016-02-17T15:56:47","guid":{"rendered":"http:\/\/www.astronotas.org\/messier\/?p=554"},"modified":"2023-12-09T14:47:50","modified_gmt":"2023-12-09T18:47:50","slug":"messier-23","status":"publish","type":"post","link":"https:\/\/www.astronotas.org\/messier\/messier-23\/","title":{"rendered":"Messier 23"},"content":{"rendered":"\n
\"M23\"<\/a><\/figure>\n\n\n\n

Objeto: M23<\/strong><\/p>\n\n\n\n

Constelaci\u00f3n: Sagittarius
Fecha: 1994.09.04 | Hora: 2:12 UT
Lugar: Hacienda La Esperanza, Manat\u00ed, PR<\/p>\n\n\n\n

Tipo de objeto: C\u00famulo abierto, clase E
Nombre: NGC 6494
Magnitud: 5.5 | Tama\u00f1o: 27′
R.A. 19h53.8m | Dec. +18\u00b047′
\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:<\/p>\n\n\n\n

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

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

Espa\u00f1ol:<\/strong> Este fue le primer intento que hice por dibujar a M23. Anteriormente lo hab\u00eda observado, pero me hab\u00eda parecido dif\u00edcil de reproducir en papel. En una ocasi\u00f3n anterior, hab\u00eda anotado lo siguiente: \u201cMuchas estrellas, la mayor\u00eda de semejante magnitud; la mejor descripci\u00f3n que puedo dar es la de una serie de cadenas de estrellas, un tanto similar a M47 y M35; tiene forma alargada.\u201d Posteriormente a\u00f1ad\u00ed: \u201cTodas sus estrellas parecen ser blancas o blanco-azuladas.\u201d<\/p>\n\n\n\n

English:<\/strong> This was my first attempt at drawing M23. I have previously observed it, but it had seemed to me difficult to reproduce on paper. On an earlier occasion, I wrote the following: \u201cMany stars, most of the same magnitude; the best description I can give is that of a series of star chains, somewhat similar to M47 and M35; it is elongated.\u201d Later I added: \u201cAll its stars appear to be white or blue-white.\u201d<\/p>\n\n\n\n

\"M23\"<\/a>
N.A.Sharp, REU program\/NOAO\/AURA\/NSF [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n

Cometarios de Messier en 1771:<\/strong> La noche del 20 al 21 de junio de 1764, determin\u00e9 la posici\u00f3n de un c\u00famulo de peque\u00f1as estrellas que est\u00e1 localizado entre el extremo del arco septentrional del Sagitario y el pie derecho de Ofiuco, muy cerca de la estrella de sexta magnitud, sexag\u00e9sima quinta de esta \u00faltima constelaci\u00f3n, seg\u00fan el cat\u00e1logo de Flamsteed: sus estrellas est\u00e1n muy cerca las unas de las otras; solo hay una que se puede ver f\u00e1cilmente con un anteojo ordinario de 3 pies y medio, y que sostiene estas peque\u00f1as estrellas. El di\u00e1metro de todas es de alrededor de 15 minutos de grado. Determin\u00e9 su posici\u00f3n compar\u00e1ndo el medio con la estrella \u03bc del Sagitario: encontr\u00e9 su ascensi\u00f3n recta de 265\u00b0<\/span> 42′ 50″ y su declinaci\u00f3n de 18\u00b0 <\/span>45′ 55″ meridional.<\/p>\n\n\n\n

Comentarios de Messier en 1784:<\/strong> C\u00famulo de estrellas, entre el extremo del arco del Sagitario y el pie derecho de Ofiuco, muy cerca de la estrella 65.ta<\/sup> de Ofiuco, seg\u00fan Flamsteed. Las estrellas del c\u00famulo est\u00e1n muy cercanas unas de otras. Su posici\u00f3n determinada por \u03bc del Sagitario.<\/p>\n\n\n\n

Mapa para localizar a M23<\/strong><\/p>\n\n\n\n

\"Mapa<\/a>
Haga click para agrandar.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Objeto: M23 Constelaci\u00f3n: SagittariusFecha: 1994.09.04 | Hora: 2:12 UTLugar: Hacienda La Esperanza, Manat\u00ed, PR Tipo de objeto: C\u00famulo abierto, clase ENombre: NGC 6494Magnitud: 5.5 | Tama\u00f1o: 27′R.A. 19h53.8m | Dec. +18\u00b047′\u00c9poca: 2000.0 Instrumento: Meade MTS-SN 6Ocular: 8.8 mm UWA |… Continue Reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[19],"tags":[106,107,108,33],"class_list":["post-554","post","type-post","status-publish","format-standard","hentry","category-cumulos-abiertos","tag-m23","tag-messier-23","tag-ngc-6494","tag-sagittarius"],"yoast_head":"\nMessier 23 - 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