{"id":23585,"date":"2021-09-16T00:00:00","date_gmt":"2021-09-16T00:00:00","guid":{"rendered":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/?post_type=purple_issue&#038;p=23585"},"modified":"2021-10-22T11:45:50","modified_gmt":"2021-10-22T11:45:50","slug":"the-southern-hemisphere","status":"publish","type":"post","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/2021\/09\/16\/the-southern-hemisphere\/","title":{"rendered":"The Southern Hemisphere"},"content":{"rendered":"\n<p class=\"has-text-align-center intro\">The gas and ice giants put on a display this month, while Pegasus is perfectly placed for exploring<\/p>\n\n<p class=\"has-text-align-center sans-serif article-full-byline has-ccp-black-color has-text-color\"><strong>With Glenn Dawes<\/strong><\/p>\n\n<div class=\"no-tts wp-block-image article-in-image bild is-style-rounded\"><figure class=\"no-tts aligncenter size-large\"><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"https:\/\/dj9jqhxgw9833.cloudfront.net\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1024x1024.jpg\" alt=\"\" class=\"no-tts wp-image-24844\" srcset=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1024x1024.jpg 1024w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-300x300.jpg 300w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-150x150.jpg 150w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-768x768.jpg 768w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1536x1536.jpg 1536w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n<div class=\"no-tts wp-block-image\"><figure class=\"no-tts aligncenter size-large\"><img loading=\"lazy\" width=\"1024\" height=\"353\" src=\"https:\/\/dj9jqhxgw9833.cloudfront.net\/uploads\/sites\/77\/2021\/09\/56Q2OP07R79JNHPJUXA10CCU6FZS-1024x353.jpg\" alt=\"\" class=\"no-tts wp-image-24843\" srcset=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/56Q2OP07R79JNHPJUXA10CCU6FZS-1024x353.jpg 1024w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/56Q2OP07R79JNHPJUXA10CCU6FZS-300x104.jpg 300w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/56Q2OP07R79JNHPJUXA10CCU6FZS-768x265.jpg 768w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/56Q2OP07R79JNHPJUXA10CCU6FZS.jpg 1417w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n<h4 class=\"article-subhead\"><strong>When to use this chart<\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong>1 Oct at 00:00 AEST (14:00 UT)<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\"><strong> 15 Oct at 23:00 AEDT (12:00 UT) <\/strong><\/p>\n\n<hr class=\"no-tts wp-block-separator has-text-color has-background has-ccp-accent-background-color has-ccp-accent-color is-style-wide\"\/>\n\n<h4 class=\"article-subhead\"><strong>October Highlights<\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif has-ccp-black-color has-text-color\"><strong>Recommended equipment: Naked eye<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif has-ccp-black-color has-text-color\">The Moon has conjunctions with three planets in the western evening sky this month. On 9 October at the end of twilight, the three-day old crescent Moon is 7\u00b0 below Venus. The following night these same objects form a triangle with the bright star Antares (Alpha (\u03b1) Scorpii). <span>On 12 October, the Moon sits on Sagittarius\u2019s Teapot asterism. Two days later, the now gibbous Moon is 4\u00b0 to the upper right of Saturn. The next day, it\u2019s a similar distance and position from Jupiter. <\/span>The chart accurately matches the sky on the dates and times shown for Sydney, Australia. The sky is different at other times as the stars crossing it set four minutes earlier each night.<\/p>\n\n<h4 class=\"article-subhead\"><strong>Stars and constellations<\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong>Recommended equipment: Naked eye<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">The northern sky is home to four mag. +2.0 stars that form the Great Square of Pegasus. Today, the constellation boundaries have the northeastern star in Andromeda, marking the head of the chained princess. Now known as Alpha (\u03b1) Andromedae, the star\u2019s origin is revealed by its Arabic name, Alpheratz \u2013 \u2018the horse\u2019s shoulder\u2019. It also explains why Pegasus no longer has a \u2018delta\u2019 star, with Alpha (\u03b1), Beta (\u03b2) and Gamma (\u03b3) Pegasi, forming the \u2018square\u2019.<\/p>\n\n<h4 class=\"article-subhead\"><strong>The Planets <\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong>Recommended equipment: Naked eye<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">Venus is well placed in the western early evening sky, reaching its highest point at the end of the month. As dusk ends, Saturn and Jupiter are high in the north. In late October Saturn reaches its <span>eastern quadrature, when you\u2019ll see the planet\u2019s shadow cast on its rings. October is also great for seeing the ice giants \u2013 Neptune transits the meridian (due north) mid-evening, shortly before Uranus.<\/span><\/p>\n\n<h4 class=\"article-subhead\"><strong>Deep-sky objects<\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong>Recommended equipment: Large telescope<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">The southwestern (top left) star of the Great Square of Pegasus is Markab (Alpha (\u03b1) Pegasi), the gateway to the mag. +10.9 galaxy NGC 7479 (RA 23h 04.9m, dec. +12\u00b0 19\u2019). Located 3\u00b0 south of the star, this face-on spiral has a distinctive bar with a bright nucleus. Its halo extends from the bar\u2019s ends. With sufficient aperture (25cm), averted vision reveals two arms. The southern end is the most prominent, curving westwards.<\/p>\n\n<p class=\"article-full-body sans-serif\"><strong>Recommended equipment: Small\/medium telescope<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">Continue southwards through <span>Pegasus another 3.5\u00b0 and you\u2019ll find an obvious trapezium made up of four mag. +5.0 stars that fit within a 1.5\u00b0 circle \u2013 ideal for observing with binoculars. Two stars are blue-white in colour, while the others are orange. One member is the double star 57 Pegasi (RA 23h 09.5m, dec. +8\u00b0 41\u2019). This pair is mag. +5.0 and mag. +9.6, coloured yellowish orange and blue respectively, about 32.5 arcseconds apart.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The gas and ice giants put on a display this month, while Pegasus is per fectly placed for exploring<\/p>\n","protected":false},"author":24,"featured_media":24845,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","purple_page_number":"100","purple_custom_meta_purple_page_number":"100","purple_seq_number":"1","purple_custom_meta_purple_seq_number":"1","purple_source_article":"article_100-1.xml","purple_custom_meta_purple_source_article":"article_100-1.xml","purple_source_issue":"October-2021","purple_custom_meta_purple_source_issue":"October-2021","purple_external_id":"October-2021-100-1","purple_custom_meta_purple_external_id":"October-2021-100-1","purple_issue_code":"|0000086545||","purple_custom_meta_purple_issue_code":"|0000086545||","purple_android_product":"com.im.skyatnight.197","purple_custom_meta_purple_android_product":"com.im.skyatnight.197","purple_ios_product":"com.im.skyatnight.197","purple_custom_meta_purple_ios_product":"com.im.skyatnight.197","purple_web_product":"","purple_custom_meta_purple_web_product":"","purple_publication_id":"075fab74-0a21-4201-866a-899d6c41c40c","purple_migrated":"","kt_blocks_editor_width":""},"categories":[22],"tags":[14],"featured_image_src":"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1.jpg","author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"acf":{"readingTimeMinutes":"3"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1.jpg",2048,2047,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1-300x300.jpg",300,300,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1-768x768.jpg",768,768,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1-1024x1024.jpg",800,800,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1-1536x1536.jpg",1536,1536,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2021\/09\/W716N3PD4CCY97K362IQQTU00I66-1.jpg",2048,2047,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"The gas and ice giants put on a display this month, while Pegasus is per fectly placed for exploring","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/23585"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/comments?post=23585"}],"version-history":[{"count":10,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/23585\/revisions"}],"predecessor-version":[{"id":24846,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/23585\/revisions\/24846"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/24845"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=23585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=23585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/tags?post=23585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}