{"id":42662,"date":"2023-03-23T09:52:45","date_gmt":"2023-03-23T09:52:45","guid":{"rendered":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/?post_type=purple_issue&#038;p=42662"},"modified":"2023-03-23T10:15:09","modified_gmt":"2023-03-23T10:15:09","slug":"binocular-tour-19","status":"publish","type":"post","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/2023\/03\/23\/binocular-tour-19\/","title":{"rendered":"Binocular tour"},"content":{"rendered":"\n<p class=\"has-text-align-center sans-serif intro\">This month\u2019s targets include a double act, a cascade and the heart of the Heart<\/p>\n\n<p class=\"has-text-align-center sans-serif author\">With Steve Tonkin<\/p>\n\n<figure class=\"no-tts wp-block-image alignfull article-in-image bild\"><img loading=\"lazy\" width=\"2048\" height=\"1179\" src=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf.jpg\" alt=\"\" class=\"no-tts wp-image-42661\" srcset=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf.jpg 2048w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-300x173.jpg 300w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-1024x590.jpg 1024w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-768x442.jpg 768w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-1536x884.jpg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/figure>\n\n<h5 class=\"sans-serif article-subhead\"><strong>1. The Double Cluster<\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br>Half-way between mag. 2.6 Ruchbah (Delta (d) Cassiopeiae) and mag. +2.9 Gamma (\u03b3) Cassiopeiae you will find a close pair of open clusters. In a rural sky, you can see them with your naked eye as a distinctly elongated smudge of light, but binoculars will reveal two little concentrations of stars. Those stars are intrinsically extremely bright: if the Sun was there, it would be too faint for you to see it in binoculars!<\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>2. Melotte 15<\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br>If you imagine that mag. +3.3 Segin (Epsilon (\u03b5) Cassiopeiae) and mag. +4.6 Iota (\u03b9) Cassiopeiae are two corners of an equilateral triangle, Melotte 15 is the third corner. In 10&#215;50 binoculars, you\u2019ll see a large (20-arcminute) glow with a handful of brighter stars forming a V shape. If you have a UHC filter to hold over an eyepiece, you might see the nebulosity (IC1805, the Heart Nebula) that surrounds, and gave birth to, the cluster.<\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>3. Markarian 6<\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 15&#215;70<\/strong><\/strong><br>Markarian 6 lies slightly less than 1\u00b0 to the south-southwest of Mel 15. It\u2019s quite easy to miss, so we use larger binoculars. What you should see is an arrow of half a dozen ninth-magnitude stars pointing southwards. Owing to its faintness compared to Mel 15, you might assume it is much further away, but at 1,600 lightyears it is actually just under a quarter of the distance.<\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>4. Pazmino\u2019s Cluster<\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br>If you pan slightly more than 1.5\u00b0 due west from mag. +4.3 CS Camelopardalis, you will find an unremarkable little trapezium of seventh and eigth-magnitude stars. This is Stock 23, also known as Pazmino\u2019s Cluster. Your binoculars should reveal that this is much more than a trapezium and you may be able to resolve about half a dozen stars against a faintly glowing patch of sky about 10 arcminutes in diameter. <\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>5. Kemble\u2019s Cascade<\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br>On spring evenings, Kemble\u2019s Cascade is near-horizontal in the sky, so this line of eighth-magnitude stars, with a brighter fifth-magnitude one in the middle, looks more like a wristwatch or bracelet opened out against the sky than a tumbling cascade. To find it, extend a line from mag. +2.3 Caph (Beta (\u03b2) Cassiopeiae) to Segin the same distance to the central bright star.<\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>6. Beta Cam<\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong>Recommended equipment: 10&#215;50 <\/strong><br>You can see mag. +4.0 Beta (\u03b2) Camelopardalis with the naked eye, and its mag. +7.4 companion, which lies 84 arcseconds southwest is easy to distinguish, even in small binoculars. Beta Cam is a yellow supergiant in transition between being a hot new blue star and a much cooler red supergiant. It sometimes flashes, probably due to the equivalent of huge solar flares.<\/p>\n\n<section class=\"wp-block-uagb-section uagb-section__wrap uagb-section__background-color uagb-block-16b123a9-367f-40c2-b945-e51350e7ca2b article-boxout\"><div class=\"uagb-section__overlay\"><\/div><div class=\"uagb-section__inner-wrap\">\n<p class=\"has-text-align-center\"><strong>MORE ONLINE <\/strong><br>Print out the Binocular Tour chart <br><a href=\"http:\/\/www.skyatnightmagazine.com\/bonus-content\/9BN84GZ\">www.skyatnightmagazine.com\/bonus-content\/9BN84GZ<\/a><\/p>\n<\/div><\/section>\n\n<p class=\"footer\">CHART: PETE LAWRENCE<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our targets include a double act, a cascade and the heart of the Heart<\/p>\n","protected":false},"author":24,"featured_media":42661,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","purple_page_number":"54","purple_custom_meta_purple_page_number":"54","purple_seq_number":"1","purple_custom_meta_purple_seq_number":"1","purple_source_article":"article_54-1.xml","purple_custom_meta_purple_source_article":"article_54-1.xml","purple_source_issue":"April-2023","purple_custom_meta_purple_source_issue":"April-2023","purple_external_id":"April-2023-54-1","purple_custom_meta_purple_external_id":"April-2023-54-1","purple_issue_code":"|0000086563||","purple_custom_meta_purple_issue_code":"|0000086563||","purple_android_product":"com.im.skyatnight.215","purple_custom_meta_purple_android_product":"com.im.skyatnight.215","purple_ios_product":"com.im.skyatnight.215","purple_custom_meta_purple_ios_product":"com.im.skyatnight.215","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\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf.jpg","author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"acf":{"readingTimeMinutes":"3","apple_news_title":""},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf.jpg",2048,1179,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-300x173.jpg",300,173,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-768x442.jpg",768,442,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-1024x590.jpg",800,461,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf-1536x884.jpg",1536,884,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/03\/b76de9c0-26dc-4188-94b5-ac8fec4959bf.jpg",2048,1179,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":"Our targets include a double act, a cascade and the heart of the Heart","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/42662"}],"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=42662"}],"version-history":[{"count":8,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/42662\/revisions"}],"predecessor-version":[{"id":44154,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/42662\/revisions\/44154"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/42661"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=42662"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=42662"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/tags?post=42662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}