{"id":87,"date":"2016-01-13T23:48:25","date_gmt":"2016-01-13T23:48:25","guid":{"rendered":"http:\/\/www.astronotas.org\/messier\/?p=87"},"modified":"2023-12-09T11:48:16","modified_gmt":"2023-12-09T15:48:16","slug":"m4","status":"publish","type":"post","link":"https:\/\/www.astronotas.org\/messier\/m4\/","title":{"rendered":"Messier 4"},"content":{"rendered":"\n
\"M4\"<\/a><\/figure>\n\n\n\n

Objeto: M4<\/strong><\/p>\n\n\n\n

Constelaci\u00f3n: Scorpius
Fecha: 1991.08.10 | Hora: n\/a UT
Lugar: Sumidero, Aguas Buenas, PR<\/p>\n\n\n\n

Tipo de objeto: C\u00famulo globular, clase IX
Nombre: NGC 6121
Magnitud: 5.9 | Tama\u00f1o: 26′
A.R. 16h15.8m | Dec. \u201326\u00b001′
\u00c9poca: 2000.0<\/p>\n\n\n\n

Instrumento: Meade MTS-SN 6
Ocular: 6mm ortosc\u00f3pico | Aumento: 127x
Campo aparente: 45\u00b0 | Campo actual: 21′
Otros:<\/p>\n\n\n\n

Carta en Uranometr\u00eda 2000.0: 336<\/p>\n\n\n\n

\"M4\"<\/a>
Hunter Wilson [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n

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

Espa\u00f1ol:<\/strong> M4 est\u00e1 localizado en el coraz\u00f3n del Escorpi\u00f3n, apenas 2\u00b0 al oeste de Antares (Alfa <\u03b1> Scorpii). Sin lugar a dudas, uno de los objetos de espacio profundo m\u00e1s f\u00e1ciles de localizar. Con binoculares, aparece como un c\u00edrculo gris entre las estrellas Antares y Sigma <\u03c3> Scorpii. Con el telescopio, a 30x, la impresi\u00f3n es similar, aunque revela su gran extensi\u00f3n. Ya, a 127x, todo cambia. Aunque las estrellas parecen ser muy tenues, el c\u00famulo se resuelve con facilidad (aunque, m\u00e1s bien, se obtiene una apariencia granulosa, algo nebuloso). Hay una l\u00ednea de estrellas brillantes que lo cruza de norte a sur. El c\u00famulo, adem\u00e1s, no es redondo, sino que tiene una forma significativamente ovalada. El dibujo incluido de M4 fue hecho el 31 de mayo de 1992, desde Aguas Buenas, PR, pero las observaciones que lo acompa\u00f1an, al igual que los datos, son de una observaci\u00f3n anterior, hecha en agosto de 1991.<\/p>\n\n\n\n

English:<\/strong> M4 is located near the heart of Scorpius, just 2\u00b0 west of Antares (Alpha <\u03b1> Scorpii). Thus it is one of the easiest deep-sky objects to find. With binoculars, it looks like a roundish gray spot between Antares and Sigma <\u03c3> Scorpii. With the telescope at 30x, the view is similar, although the cluster shows a greater extension. At 127x everything changes. Even though the stars are deem, the cluster resolves easily (it acquires a quasi-nebulous granular appearance). There is a line of bright stars crossing the globular’s face from north to south; the cluster itself is not circular, but oval in shape. This sketch was made 31 August 1992, from Aguas Buenas, PR, but the accompanying observations and notes date from a previous observation done in August 1991.<\/p>\n\n\n\n

\"M4\"<\/a>
NOAO\/AURA\/NSF [origen<\/a>] <\/figcaption><\/figure>\n\n\n\n

Comentario de Messier en 1771:<\/strong> El 8 de mayo de 1764, descubr\u00ed una nebulosa cerca de Antares y sobre su paralelo, es una luz que tiene poca extensi\u00f3n, que es d\u00e9bil, y que se ve dif\u00edcilmente: usando un buen telescopio para verla se perciben estrellas muy peque\u00f1as. Su ascensi\u00f3n recta ha sido determinada de 242\u00b0 16\u2032 56\u2033, y su declinaci\u00f3n de 25\u00b0 55\u2032 40\u2033 meridional.<\/p>\n\n\n\n

Comentario de Messier en 1784: <\/strong>C\u00famulo de estrellas bien peque\u00f1as; con un anteojo peque\u00f1o se ve como una nebulosa; este c\u00famulo de estrellas se encuentra cerca de Antares y sobre su paralelo. Observada por M. de la Caille, y reportada en su Cat\u00e1logo. Vuelta a ver el 30 de enero y el 22 de marzo de 1781.<\/p>\n\n\n\n

Mapa para localizar a M4<\/strong><\/p>\n\n\n\n

\"Mapa<\/a>
Haga click para agrandar.<\/figcaption><\/figure>\n\n\n\n
\"M4\"<\/a>
DSS2 @ Wikisky.org<\/figcaption><\/figure>\n\n\n\n
\"M4\"<\/a>
ESO [origen<\/a>] <\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Objeto: M4 Constelaci\u00f3n: ScorpiusFecha: 1991.08.10 | Hora: n\/a UTLugar: Sumidero, Aguas Buenas, PR Tipo de objeto: C\u00famulo globular, clase IXNombre: NGC 6121Magnitud: 5.9 | Tama\u00f1o: 26′A.R. 16h15.8m | Dec. \u201326\u00b001′\u00c9poca: 2000.0 Instrumento: Meade MTS-SN 6Ocular: 6mm ortosc\u00f3pico | Aumento: 127xCampo… 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":[10],"tags":[15,98,26,16],"class_list":["post-87","post","type-post","status-publish","format-standard","hentry","category-cumulos-globulares","tag-m4","tag-messier-4","tag-ngc-6121","tag-scorpius"],"yoast_head":"\nMessier 4 - 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