{"id":6541,"date":"2022-11-20T19:55:13","date_gmt":"2022-11-20T22:55:13","guid":{"rendered":"http:\/\/austrinus.com\/?p=6541"},"modified":"2025-01-17T05:04:34","modified_gmt":"2025-01-17T08:04:34","slug":"orientacion","status":"publish","type":"post","link":"https:\/\/austrinus.com\/en\/orientacion\/","title":{"rendered":"Celestial orientation"},"content":{"rendered":"

A key concept to orient yourself: the celestial vault.<\/strong><\/p>\n\n\n\n

Understanding the celestial vault is essential to be able to correctly imagine what is happening in the sky, as well as to have the appropriate notions in application cases (e.g. astrophotography).<\/p>\n\n\n\n

Depending on our latitude, then, we will see the stars move differently in the sky, as will be explained in the following examples:<\/p>\n\n\n\n

If you were at the North Pole<\/strong> (90\u00ba N<\/strong>) all the stars will appear to be rotating around the north celestial pole towards the zenith (just above your head), and during the night the stars never rise or set.<\/p>\n\n\n\n

If you were at the equator<\/strong> (0\u00ba<\/strong>), you will be aligned perpendicular to the Earth's axis of rotation. From your point of view, the stars move in a straight line, rising from the East, moving and setting in the West. The celestial poles will be exactly at the level of the North and South horizon.<\/p>\n\n\n\n

\n
\"\"
90\u00b0<\/figcaption><\/figure>\n\n\n\n
\"\"
0\u00b0<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

If you were in Seattle (47\u00ba N<\/strong>) all the stars now appear to revolve around a point located 47\u00ba above the horizon in a northern direction.<\/p>\n\n\n\n

If you were in Los Angeles (34\u00ba N<\/strong>), all the stars now appear to revolve around a point located 34\u00ba above the horizon in a northern direction. The celestial pole (North or South) will be located a number of degrees above the horizon equal to your latitude (North or South) on Earth.<\/p>\n\n\n\n

\n
\"\"
47\u00b0<\/figcaption><\/figure>\n\n\n\n
\"\"
34\u00b0<\/figcaption><\/figure>\n<\/figure>\n\n\n\n\n\n\n\n
\n

light blue pole<\/strong>
It is the point around which the stars appear to rotate during the night (which in reality does not happen, it is just the sensation that the Earth's rotation gives). When observing the sky in the direction of this point, we will notice that the stars around seem to describe concentric circles, which is clearly evidenced when taking a long exposure astrophotography. <\/p>\n<\/div>

\"\"<\/figure><\/div>\n\n\n\n

In the Northern Hemisphere, it is easy to find this point because it is very close to the star Polaris (\u03b1 Ursae Minoris), magnitude 1.9; while in the Southern Hemisphere, in the absence of a nearby bright star (the nearest star is Polaris Australis, \u03c3 Octantis, magnitude 5.4), a mnemonic that uses the nearby constellation of the Southern Cross is often used to find this spot.<\/p>\n\n\n\n

\n

celestial equator<\/strong>
It is the Earth's equator projected in the sky, that is, in its same plane, inclined at 23\u00ba with respect to the plane of the ecliptic. If we were located exactly on the Earth's equator, we would see the stars rising exactly vertically above the eastern horizon, and descending vertically on the western horizon, while both celestial poles (North and South) would be seen at horizon level when looking. in North and South directions, respectively. <\/p>\n<\/div>

\"\"<\/figure><\/div>\n\n\n\n

From other places on Earth, the region of the sky corresponding to the celestial equator is easily distinguished by showing straight lines (when observed in astrophotography), as opposed to curved lines near one of the celestial poles.<\/p>","protected":false},"excerpt":{"rendered":"

A key concept to orient yourself: the celestial vault. Understanding the celestial vault is essential to be able to correctly imagine what is happening in the sky, as well as to have the appropriate notions in application cases (e.g. astrophotography). Depending on our latitude, then, we will see the stars move differently in the sky, just like...<\/p>","protected":false},"author":1,"featured_media":6539,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[91],"tags":[],"class_list":["post-6541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomia-posicion"],"magazineBlocksPostFeaturedMedia":{"thumbnail":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-150x150.jpg","medium":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-300x200.jpg","medium_large":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-768x512.jpg","large":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-1024x683.jpg","1536x1536":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg","2048x2048":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg","trp-custom-language-flag":"https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg"},"magazineBlocksPostAuthor":{"name":"Farid","avatar":"https:\/\/secure.gravatar.com\/avatar\/57e8aa07b0d16e13c8408ea413c009fc7da05f4cbb36da0d568b4235b1eaee6b?s=96&r=g"},"magazineBlocksPostCommentsNumber":false,"magazineBlocksPostExcerpt":"Un concepto clave para orientarse: la b\u00f3veda celeste. Entender la b\u00f3veda celeste es fundamental para poder imaginarse de manera correcta lo que ocurre en el cielo, as\u00ed como tener las nociones apropiadas en casos de aplicaci\u00f3n (ej. astrofotograf\u00edas). Dependiendo de nuestra latitud, entonces, veremos las estrellas moverse de distinta manera en el cielo, tal como…","magazineBlocksPostCategories":["Astronom\u00eda de posici\u00f3n"],"magazineBlocksPostViewCount":1138,"magazineBlocksPostReadTime":3,"magazine_blocks_featured_image_url":{"full":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg",1200,800,false],"medium":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-300x200.jpg",300,200,true],"thumbnail":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-150x150.jpg",150,150,true]},"magazine_blocks_author":{"display_name":"Farid","author_link":"https:\/\/austrinus.com\/en\/author\/farid\/"},"magazine_blocks_comment":0,"magazine_blocks_author_image":"https:\/\/secure.gravatar.com\/avatar\/57e8aa07b0d16e13c8408ea413c009fc7da05f4cbb36da0d568b4235b1eaee6b?s=96&r=g","magazine_blocks_category":"Astronom\u00eda de posici\u00f3n<\/a>","uagb_featured_image_src":{"full":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg",1200,800,false],"thumbnail":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-150x150.jpg",150,150,true],"medium":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-300x200.jpg",300,200,true],"medium_large":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-768x512.jpg",640,427,true],"large":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste-1024x683.jpg",640,427,true],"1536x1536":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg",1200,800,false],"2048x2048":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg",1200,800,false],"trp-custom-language-flag":["https:\/\/austrinus.com\/wp-content\/uploads\/2022\/11\/orientacion-celeste.jpg",18,12,false]},"uagb_author_info":{"display_name":"Farid","author_link":"https:\/\/austrinus.com\/en\/author\/farid\/"},"uagb_comment_info":0,"uagb_excerpt":"Un concepto clave para orientarse: la b\u00f3veda celeste. Entender la b\u00f3veda celeste es fundamental para poder imaginarse de manera correcta lo que ocurre en el cielo, as\u00ed como tener las nociones apropiadas en casos de aplicaci\u00f3n (ej. astrofotograf\u00edas). Dependiendo de nuestra latitud, entonces, veremos las estrellas moverse de distinta manera en el cielo, tal como…","_links":{"self":[{"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/posts\/6541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/comments?post=6541"}],"version-history":[{"count":1,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/posts\/6541\/revisions"}],"predecessor-version":[{"id":6581,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/posts\/6541\/revisions\/6581"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/media\/6539"}],"wp:attachment":[{"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/media?parent=6541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/categories?post=6541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/austrinus.com\/en\/wp-json\/wp\/v2\/tags?post=6541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}