{"id":41651,"date":"2023-02-14T14:43:17","date_gmt":"2023-02-14T14:43:17","guid":{"rendered":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/?post_type=purple_issue&#038;p=41651"},"modified":"2023-02-16T09:20:29","modified_gmt":"2023-02-16T09:20:29","slug":"binocular-tour-18","status":"publish","type":"post","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/2023\/02\/14\/binocular-tour-18\/","title":{"rendered":"Binocular tour"},"content":{"rendered":"\n<p class=\"has-text-align-center intro\">This month we\u2019re prowling for targets with the hunting dogs, Canes Venatici <\/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=\"1202\" src=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6.jpg\" alt=\"\" class=\"no-tts wp-image-41650\" srcset=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6.jpg 2048w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-300x176.jpg 300w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-1024x601.jpg 1024w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-768x451.jpg 768w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-1536x902.jpg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/figure>\n\n<h5 class=\"sans-serif article-subhead\"><strong>1. Melotte 111 <\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong>Recommended equipment: 10&#215;50<\/strong><br>The Coma Berenices Cluster, <span>Melotte 111, is one of the finest celestial sights for binoculars, extending for nearly 6\u00b0 and filling the view of 10&#215;50 binoculars. You can see it with your naked eye as a misty patch between mag. +2.9 Cor Caroli (Alpha (\u03b1) Canum Venaticorum) and mag. +2.1 Denebola (Beta (\u03b2) Leonis). Look for the inverted \u2018V\u2019 of the cluster\u2019s brighter stars, with mag. +4.3 Gamma (\u03b3) Comae Berenices at its apex.<\/span><\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>2. Ceres <\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br><span>Ceres is the only dwarf planet that is visible in binoculars. At the beginning of the month, you will find it a little more than 3\u00b0 north of mag. +4.9 Rho (\u03c1) Virginis, shining at mag. +7.4. It moves westward through the northern part of the Virgo\u2013Coma cluster of galaxies, reaching a peak magnitude of +7.1 at opposition (when it is directly opposite the Sun) on 21 March, then declining to mag. +7.2 by the month\u2019s end. <\/span><\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>3. La Superba <\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br><span>Locate mag. +4.2 Chara (Beta (\u03b2) Canum Venaticorum) and pan 4.5\u00b0 towards mag. +2.2 Mizar (Zeta (\u03b6) Ursae Majoris) where there lies a distinctive red-orange star (it looks a deeper orange in larger apertures). This is Y CVn, a cool carbon star whose magnitude varies from +6.3 to +4.7, with a period of about 160 days. The name La Superba refers to its spectrum, not its visual appearance. <\/span><\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>4. The Whirlpool Galaxy, M51 <\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 10&#215;50<\/strong><\/strong><br><span>Our first galaxy is very easy to find and, because of its high surface brightness, is also quite easy to see. Imagine that a line from Mizar to mag. +1.9 Alkaid (Eta (\u03b7) Ursae Majoris) is the stem of an upper case letter \u2018L\u2019. M51 lies at the end of the foot of this imaginary \u2018L\u2019, 3.5\u00b0 from Alkaid. If you use averted vision, can you detect that the glow of these 100 billion suns is slightly elongated?<\/span><\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>5. M94 <\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong><strong>Recommended equipment: 1<\/strong>5&#215;70<\/strong><\/strong><br><span>Imagine a line joining Cor Caroli to Chara, and from halfway along this line go 2\u00b0 in the direction of Alkaid. Here, possibly needing averted vision until you learn to recognise it, you\u2019ll find the 23-million-year-old light from the spiral galaxy M94. Like all galaxies, it benefits greatly from dark, transparent skies, but it is usually quite easy to see once it rises above any low-level skyglow. <\/span><\/p>\n\n<h5 class=\"sans-serif article-subhead\"><strong>6. The Whale Galaxy, NGC 4631 <\/strong><\/h5>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommended equipment: 1<\/strong>5&#215;70<\/strong><br><span>Our final target has no nearby markers to help locate it, but it\u2019s very close to the middle of a line joining Cor Caroli to Gamma Comae. It\u2019s a bit fainter than our other two galaxies, making it a bit of a challenge in 70mm binoculars, so you may need averted vision. What you will see is an east\u2013west streak of light, but probably not the slight distortion that gives it its common name. <\/span><\/p>\n\n<p class=\"footer\">CHART BY PETE LAWRENCE<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This month we\u2019re prowling for targets with the hunting dogs, Canes Venatici <\/p>\n","protected":false},"author":24,"featured_media":41650,"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":"March-2023","purple_custom_meta_purple_source_issue":"March-2023","purple_external_id":"March-2023-54-1","purple_custom_meta_purple_external_id":"March-2023-54-1","purple_issue_code":"|0000086562||","purple_custom_meta_purple_issue_code":"|0000086562||","purple_android_product":"com.im.skyatnight.214","purple_custom_meta_purple_android_product":"com.im.skyatnight.214","purple_ios_product":"com.im.skyatnight.214","purple_custom_meta_purple_ios_product":"com.im.skyatnight.214","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\/02\/f392f502-06c2-4319-bf91-45a9658bebe6.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\/02\/f392f502-06c2-4319-bf91-45a9658bebe6.jpg",2048,1202,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-300x176.jpg",300,176,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-768x451.jpg",768,451,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-1024x601.jpg",800,470,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6-1536x902.jpg",1536,902,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/02\/f392f502-06c2-4319-bf91-45a9658bebe6.jpg",2048,1202,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":"This month we\u2019re prowling for targets with the hunting dogs, Canes Venatici","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/41651"}],"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=41651"}],"version-history":[{"count":3,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/41651\/revisions"}],"predecessor-version":[{"id":42276,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/41651\/revisions\/42276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/41650"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=41651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=41651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/tags?post=41651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}