{"id":2241,"date":"2017-07-28T14:27:53","date_gmt":"2017-07-28T13:27:53","guid":{"rendered":"http:\/\/www.popastro.com\/main_spa1\/deepsky\/?p=2241"},"modified":"2018-01-16T10:21:54","modified_gmt":"2018-01-16T10:21:54","slug":"2241-2","status":"publish","type":"page","link":"https:\/\/www.popastro.com\/deepsky\/2241-2\/","title":{"rendered":"June 2017"},"content":{"rendered":"

As ever, at this time of year, observations of Deep Sky objects are relatively few.\u00a0 Two section members sent in eight images in total.<\/p>\n

David Davies\u00a0<\/strong>of Cambridge imaged a pair of globular clusters, M53 and NGC 5053;\u00a0 these are to be\u00a0found around one degree apart in the constellation of Coma Berenices.<\/p>\n

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M53, NGC 5053<\/figcaption><\/figure>\n

They look quite different:\u00a0 M53 to the top right of the image is a V (5) in the Shapley – Sawyer concentration class where I (1) is the most concentrated and XII (12) the least concentrated.\u00a0 NGC5053 is clearly less tightly packed and is a class XI globular.\u00a0 At about 58,000 light years from the Earth, M53 is one of the more distant Messier globulars*, and it lies a similar distance, 60,000 light years, almost due North of the milky way galactic centre.\u00a0 David used a 107mm APM triplet APO refractor and a QSI583 mono camera plus red green and blue filters.<\/p>\n

* only two are further away\u00a0 from us: M54 at 86,400 light years and M75 at 68,100 light years;\u00a0 both are in Sagittarius.<\/p>\n

Paul Crossland,<\/strong>\u00a0observing from Liverpool using a Skywatcher ED80 refractor and Canon 500D DSLR, sent in the following images.<\/p>\n

M38 and M36 are both open clusters in the constellation of Auriga;\u00a0 M51 is the Whirlpool galaxy in Canes Venatici and M44, also known as Praesepe or the Beehive open cluster, is in Cancer.<\/p>\n

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M36<\/figcaption><\/figure>\n
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M38<\/figcaption><\/figure>\n
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M51<\/figcaption><\/figure>\n
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M44<\/figcaption><\/figure>\n

Paul sent in three more images:\u00a0 First are two of the four planetary nebulae featured in the Messier catalogue*. M57, the Ring nebula in the constellation of Lyra;\u00a0 and M97, the Owl nebula in Ursa Major.<\/p>\n

 <\/p>\n

* The other two are M27, the dumbbell nebula in Vulpecula and M76, the Little Dumbbell in Perseus.<\/p>\n

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M57<\/figcaption><\/figure>\n
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M97<\/figcaption><\/figure>\n

 <\/p>\n

Paul’s final image is of galaxies M81 and M82;\u00a0 which are located in the constellation of Ursa Major.<\/p>\n

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M81, M82<\/figcaption><\/figure>\n

On the right in this image is M81, also known as Bode’s galaxy, about 12 million light years from the Earth and containing an active nucleus powered by a supermassive black hole, thought to be more than 70 million times\u00a0 as massive as our sun.\u00a0 M82 has a region of rapid star formation in its core, thought to have been triggered by gravitational interraction with M81.\u00a0 At a similar distance from the Earth, it is the nearest starburst galaxy we can study.<\/p>\n

Dave Finnigan<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

As ever, at this time of year, observations of Deep Sky objects are relatively few.\u00a0 Two section members sent in eight images in total. David Davies\u00a0of Cambridge imaged a pair of globular clusters, M53 and NGC 5053;\u00a0 these are toRead more<\/span><\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2241","page","type-page","status-publish","hentry","category-reports"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t