{"id":8272,"date":"2016-10-07T00:56:42","date_gmt":"2016-10-07T03:56:42","guid":{"rendered":"http:\/\/astroentrerios.com.ar\/web\/?p=8272"},"modified":"2016-10-07T09:35:36","modified_gmt":"2016-10-07T12:35:36","slug":"los-3-magnificos-aristillus-archimedes-y-autolycus","status":"publish","type":"post","link":"https:\/\/astroentrerios.com.ar\/web\/los-3-magnificos-aristillus-archimedes-y-autolycus\/","title":{"rendered":"Los 3 magn\u00edficos. Aristillus, Archimedes y Autolycus."},"content":{"rendered":"<p><a href=\"http:\/\/astroentrerios.com.ar\/web\/wp-content\/uploads\/2016\/10\/aristillus-08-21-2016.05-28.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-8273\" src=\"http:\/\/astroentrerios.com.ar\/web\/wp-content\/uploads\/2016\/10\/aristillus-08-21-2016.05-28-1024x779.jpg\" alt=\"aristillus 08-21-2016.05-28\" width=\"640\" height=\"487\" srcset=\"https:\/\/astroentrerios.com.ar\/web\/wp-content\/uploads\/2016\/10\/aristillus-08-21-2016.05-28-1024x779.jpg 1024w, https:\/\/astroentrerios.com.ar\/web\/wp-content\/uploads\/2016\/10\/aristillus-08-21-2016.05-28-300x228.jpg 300w, https:\/\/astroentrerios.com.ar\/web\/wp-content\/uploads\/2016\/10\/aristillus-08-21-2016.05-28.jpg 1336w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p>La presente es la traducci\u00f3n del texto aparecido en la edici\u00f3n de octubre de 2016 de \u201cThe Lunar Observer\u201d. La menci\u00f3n a la obra de Peter Grego es un homenaje a su reciente y prematuro fallecimiento.<\/p>\n<p><!--more--><\/p>\n<p>Estos hermosos accidentes en la zona oeste del Mare Imbrium son bien conocidos pero siempre merecen una nueva mirada. Archimedes, Autolycus y Aristillus son muy diferentes entre s\u00ed. Archimedes es un cr\u00e1ter enorme (83 km. de di\u00e1metro) con un fondo completamente inundado por la lava que form\u00f3 el Mare Imbrium, que tambi\u00e9n inund\u00f3 parcialmente su manto de material eyectado. Autolycus (39 kms. de di\u00e1metro) es el m\u00e1s peque\u00f1o de los tres, su principal caracter\u00edstica es un fondo rugoso y desintegrado. Aristillus (55 kms. de di\u00e1metro) es un espl\u00e9ndido ejemplar del t\u00edpico cr\u00e1ter de impacto con laderas interiores aterrazadas, un manto de material eyectado extenso y brillante y una constelaci\u00f3n de picos centrales.<\/p>\n<p>Es una zona muy especial, ya que la sonda sovi\u00e9tica Luna 2-el primer artefacto humano en alcanzar la superficie de la Luna-se encuentra en alg\u00fan lugar en las cercan\u00edas de Autolycus.<\/p>\n<p>En el 18\u00ba d\u00eda de la lunaci\u00f3n (colongitud 129.8), podemos observar los rayos que emanan de Aristillus y Autolycus. Los rayos de Autolycus (\u00bfo de Copernicus?) proporcionan una extra\u00f1a vista de Archimedes, con su fondo, completamente oscuro usualmente, ahora cruzado por bandas brillantes.<\/p>\n<p>Lo que llam\u00f3 mi atenci\u00f3n en esta imagen fue la banda oscura que se aprecia en Aristillus, una supuesta anomal\u00eda que me hizo pensar en un fen\u00f3meno lunar transitorio. En el libro de Peter Grego \u201cThe moon and how to observe it\u201d estaba la respuesta, como siempre: \u201cLa ladera interna noreste est\u00e1 marcada por una prominente banda oscura que se extiende desde el fondo del cr\u00e1ter hasta el borde. Se trata de una de las m\u00e1s notables bandas de albedo oscuro que se puedan encontrar en un cr\u00e1ter lunar y no aparece asociada con ninguna formaci\u00f3n topogr\u00e1fica\u201d(p\u00e1g.140). Peter estar\u00e1 siempre con nosotros cuando tengamos la necesidad y el placer de releer sus libros. Y la banda oscura de Aristillus sigue siendo un misterio.<\/p>\n<p>Name and location of observer: Alberto Anunziato (Oro Verde, Argentina).<\/p>\n<p>Name of feature: Aristillus.<\/p>\n<p>Date and time (UT) of observation: 08-21-2016-05:28.<\/p>\n<p>Filter: Astronomik ProPlanet 742 IR-pass.<\/p>\n<p>Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).<\/p>\n<p>Medium employed (for photos and electronic images): QHY5-II.<\/p>\n<p>&nbsp;<\/p>\n<p>THE MAGNIFICENT THREE<\/p>\n<p>Alberto Anunziato<\/p>\n<p>\u201cThese beautiful features in the western part of the Mare Imbrium are well known but always deserves another look. Archimedes, Autolycus and Aristillus are very different from each other. Archimedes is a large crater (83 km.) with a floor completely flooded by the lava that formed Mare Imbrium, wich also flooded partially it\u2019s ejecta blanket. Autolycus (39 km.) is the smaller one, it\u2019s main characteristic is a rough and disintegrated floor. Aristillus (55 km.) is a tipical and splendid impact crater with terraced inner walls, wide and bright ejecta blanket and a constellation of central peaks.<\/p>\n<p>This area is very special because the soviet probe Luna 2-the first man-made object to reach the Moon surface-lies somewhere near Autolycus.<\/p>\n<p>In the 18th day of the lunation (129.8 colongitude), we could see the the rays emanating from Aristillus and Autolycus. The rays from Autolycus (or from Copernicus?) supply a rare view of Archimedes, with it\u2019s floor, usually completely dark, now veined with bright streaks.<\/p>\n<p>What caught my attention in this image was a dark band in Aristillus, an oddity that made me think on a lunar transient phenomena. In Peter Grego\u2019s \u201cThe moon and how to observe it\u201d was the answer, as always: \u201cThe northeastern inner wall is marked by aprominent dark band that extends from the crater\u2019s floor to its rim. This feature,one of the most noteworthy dark albedo bands to be found in any lunar crater,doesnot appear to be associated with any topographic formation\u201d(p.140). Peter will be with us every time we have the need and the pleasure of review his works. And the dark band of Aristillus remains a mystery\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La presente es la traducci\u00f3n del texto aparecido en la edici\u00f3n de octubre de 2016 de \u201cThe Lunar Observer\u201d. La menci\u00f3n a la obra de Peter Grego es un homenaje&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-8272","post","type-post","status-publish","format-standard","hentry","category-lunar-y-planetaria"],"_links":{"self":[{"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/posts\/8272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/comments?post=8272"}],"version-history":[{"count":0,"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/posts\/8272\/revisions"}],"wp:attachment":[{"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/media?parent=8272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/categories?post=8272"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astroentrerios.com.ar\/web\/wp-json\/wp\/v2\/tags?post=8272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}