{"id":32826,"date":"2022-06-16T00:00:00","date_gmt":"2022-06-16T00:00:00","guid":{"rendered":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/?post_type=purple_issue&#038;p=32826"},"modified":"2022-07-12T14:58:59","modified_gmt":"2022-07-12T14:58:59","slug":"binocular-tour-10","status":"publish","type":"post","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/2022\/06\/16\/binocular-tour-10\/","title":{"rendered":"Binocular tour"},"content":{"rendered":"\n<p class=\"has-text-align-center intro\">Our roundup of wide-field gems includes the Summer Beehive and Barnard\u2019s Star<\/p>\n\n<p class=\"has-text-align-center author\">With Steve Tonkin <\/p>\n\n<figure class=\"no-tts wp-block-image article-in-image bild\"><img loading=\"lazy\" width=\"2048\" height=\"1224\" src=\"https:\/\/dj9jqhxgw9833.cloudfront.net\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056.jpg\" alt=\"\" class=\"no-tts wp-image-32825\" srcset=\"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056.jpg 2048w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-300x179.jpg 300w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-1024x612.jpg 1024w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-768x459.jpg 768w, https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-1536x918.jpg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/figure>\n\n<h4 class=\"article-subhead\"><strong>1. The Summer Beehive <\/strong><\/h4>\n\n<p class=\"sans-serif article-full-body\"><strong>Recommend equipment: 10&#215;50 <\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">The Summer Beehive (IC 4665), looks like a slightly smaller version of Praesepe (the Beehive Cluster) and, with its curved chain of white stars that form part of the letter \u2018H\u2019 in the inverted word \u2018HI\u2019, welcomes you to the summer skies. This relatively young cluster is a delight in binoculars of any size and you should easily be able to resolve 10 or more stars with a pair of 10x50s. <\/p>\n\n<h4 class=\"article-subhead\"><strong>2. Poniatowski\u2019s Bull <\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommend equipment: 10&#215;50<\/strong><\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">We\u2019ll continue with another easy object, one that looks better in wide-field binoculars than any other. Poniatowski\u2019s Bull (Melotte 186) is a 4\u00b0 diameter open cluster that includes the V shape formed by 66, 67, 68, 70 and 73 Ophiuchi. These 4th and 5th magnitude stars make it similar to the Hyades cluster in Taurus, hence its common name, given to it in the 18th century in honour of Stanis\u0142aw Poniatowski, King of Poland.<\/p>\n\n<h4 class=\"article-subhead\"><strong>3. Graff\u2019s Cluster and NGC 6633 <\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommend equipment: 10&#215;50<\/strong><\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">Our next target is a pair of contrasting clusters. Follow the left-hand leg of the V-shaped asterism of Melotte 186 a further 5\u00bd\u00b0 to the northeast to find NGC 6633, with its four brightest stars glinting against the 20-arcminute gleam of the unresolved stars. If you now pan 3\u00b0 towards mag. +4.6 Alya (Theta (\u03b8) Serpentis), you will find the 1\u00b0 diameter glow of Graff\u2019s Cluster, IC 4756. <\/p>\n\n<h4 class=\"article-subhead\"><strong>4. Barnard\u2019s Star <\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong><strong>Recommend equipment: 15&#215;70<\/strong><\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">This veritable Skies\u2019 has the greatest proper \u2018Greyhound of the motion (apparent motion relative to the celestial sphere). To find it, identify mag. +4.8 star 66 Ophiuchi, and use the inset chart, above. It only shines at mag. +9.5, so it can be a challenging target in summer skies that don\u2019t get properly dark. Using binoculars, it will take you about a decade to detect its apparent motion of 10.3 arcseconds a year. <\/p>\n\n<h4 class=\"article-subhead\"><strong>5. M10 and M12 <\/strong><\/h4>\n\n<p><strong>Recommend equipment: 10&#215;50<\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">M12 is close of an equilateral triangle that has to the northeast apex mag. +2.7 Yed Prior (Delta (\u03b4) Ophiuchi) and Zeta (\u03b6) Ophiuchi as its other apexes; M10 is about 3\u00b0 southeast of it. They offer a useful demonstration of averted vision: you will find that when you direct your gaze to one, the other brightens and grows. This also shows that M10 has a much more distinct core. <\/p>\n\n<h4 class=\"article-subhead\"><strong>6. Comet C\/2017 K2 (PanSTARRS) <\/strong><\/h4>\n\n<p class=\"article-full-body sans-serif\"><strong><strong><strong>Recommend equipment: 15&#215;70<\/strong><\/strong><\/strong><\/p>\n\n<p class=\"article-full-body sans-serif\">Since its discovery five years ago, <strong> <\/strong>this comet has raised hopes of a good apparition as it approaches perihelion. During July, it is predicted to be within the grasp of small binoculars as it traverses Ophiuchus, passing M10 on the 15th. Although it brightens, it also moves southwards, so this could be the best time to observe it from UK latitudes. <\/p>\n\n<p><\/p>\n\n<p><\/p>\n\n<p class=\"footer\">Photos: PETE LAWRENCE <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our roundup of wide-field gems includes the Summer Beehive and Barnard\u2019s Star<\/p>\n","protected":false},"author":24,"featured_media":32825,"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":"July-2022","purple_custom_meta_purple_source_issue":"July-2022","purple_external_id":"July-2022-54-1","purple_custom_meta_purple_external_id":"July-2022-54-1","purple_issue_code":"|0000086554||","purple_custom_meta_purple_issue_code":"|0000086554||","purple_android_product":"com.im.skyatnight.206","purple_custom_meta_purple_android_product":"2022skyatnightJuly","purple_ios_product":"com.im.skyatnight.206","purple_custom_meta_purple_ios_product":"2022skyatnightJuly","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\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056.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\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056.jpg",2048,1224,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-300x179.jpg",300,179,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-768x459.jpg",768,459,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-1024x612.jpg",800,478,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056-1536x918.jpg",1536,918,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/06\/39244746-b0c2-430e-af00-2b059b19d056.jpg",2048,1224,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 roundup of wide-field gems includes the Summer Beehive and Barnard\u2019s Star","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/32826"}],"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=32826"}],"version-history":[{"count":5,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/32826\/revisions"}],"predecessor-version":[{"id":33276,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/32826\/revisions\/33276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/32825"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=32826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=32826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/tags?post=32826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}