{"id":2164,"date":"2016-06-30T23:00:00","date_gmt":"2016-06-30T22:00:00","guid":{"rendered":"http:\/\/localhost:8888\/wordpress\/?p=2164"},"modified":"2018-01-13T13:51:45","modified_gmt":"2018-01-13T13:51:45","slug":"june-2016","status":"publish","type":"page","link":"https:\/\/www.popastro.com\/deepsky\/june-2016\/","title":{"rendered":"June 2016"},"content":{"rendered":"

This month, despite a shortage of clear skies and few hours of true darkness, four section members sent in 14 observations:\u00a0 12 images and 2 sketches.<\/p>\n

Ian Papworth,<\/strong> SPA membership secretary, sent 3 images of globular clusters:\u00a0 they are NGC 5466, in the constellation of Bootes, M13 in Hercules and M56 in Lyra.\u00a0 NGC 5466, in common with most globulars, is metal poor;\u00a0 it is unusual however as it is the source of a stream of stars known as the NGC 5466 stream or the 45 degree tidal stream, which is about 1.5 degrees wide and stretches from\u00a0 Bootes to Ursa Major.\u00a0 Ian used a Celestron Nexstar 6SE f6.3 Schmidt Cassegrain telescope and a ZWO ASI 120MM camera plus R, G and B filters.<\/p>\n

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NGC 5466<\/figcaption><\/figure>\n
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M13<\/figcaption><\/figure>\n
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S M56<\/figcaption><\/figure>\n

In the radio dish at Arecibo, Puerto Rico aimed a message towards M13, some 25,000 light years away.\u00a0 In the time it will take for the signal to arrive, the proper motion of M13 is around 24 light years, just over a quarter of its radius:\u00a0 a good choice of target therefore!<\/p>\n

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There is a suggestion that M56, which follows a retrograde orbit around our galaxy, was once associated with a dwarf galaxy which merged with our own;\u00a0 the surviving nucleus of that dwarf galaxy being Omega Centauri.<\/p>\n

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David Davies,<\/strong> using a variety of telescopes plus a QSI 583 camera and R, G and B filters, produced the following four images.<\/p>\n

NGC 4565 (also in the image is NGC 4562), is an edge-on spiral galaxy in the constellation of Coma Berenices; \u00a0 M13 is a globular cluster in Hercules;\u00a0 next is a supernova in elliptical galaxy NGC 4125, lying in Draco and finally M94, a face-on spiral galaxy in Cane Venatici.<\/p>\n

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NGC 4565<\/figcaption><\/figure>\n
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M13<\/figcaption><\/figure>\n
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NGC 4125<\/figcaption><\/figure>\n

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The supernova, a type 1a, is just above the galactic centre.\u00a0 It was discovered at the Lick Observatory on 28th May 2016, and is around apparent magnitude 14.\u00a0 M94 is notable for having two rings, clearly evident in this image.<\/p>\n

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Michael Kinns<\/strong> submitted two sketches of galaxies.\u00a0 First are M85 and NGC 4394;\u00a0 a lenticular (some say elliptical) and a barred spiral respectively, in the constellation of Coma Berenices – these two are interacting.\u00a0 Next is NGC 4559, aka Caldwell 36, a spiral also in Coma Berenices.\u00a0 Michael used an Orion Optics SPX200 f6 Newtonian reflector, at x100 magnification.<\/p>\n

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M85<\/figcaption><\/figure>\n

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NGC 4559<\/figcaption><\/figure>\n

Geoff Elston,<\/strong> SPA Solar section director, sent in 5 images from observing sessions between February and mid June.\u00a0 The first four are globular clusters M3 in the constellation of Canes Venatici, M13 in Hercules, M13 and NGC 6207 (a spiral galaxy to the left and below M13 in this image), and galaxy M100 in Coma Berenices.<\/p>\n

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M3<\/figcaption><\/figure>\n
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M13<\/figcaption><\/figure>\n
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M13 and NGC 6207<\/figcaption><\/figure>\n
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M100<\/figcaption><\/figure>\n

Here is an image of NGC 2158 and M35, open clusters in Gemini.\u00a0 Geoff employed a Vixen 80mm refractor, and an unmodified Canon 550D DSLR (unmodified).<\/p>\n

In this last image, NGC 2158 is the more compact open cluster to the right of M35.\u00a0 M35 is about 9000 light years closer to us.\u00a0 NGC 2158 was once thought to be a globular cluster, but is now known to be a metal – poor open cluster, about 2 billion years old.<\/p>\n

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Dave Finnigan\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

This month, despite a shortage of clear skies and few hours of true darkness, four section members sent in 14 observations:\u00a0 12 images and 2 sketches. Ian Papworth, SPA membership secretary, sent 3 images of globular clusters:\u00a0 they are NGCRead 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-2164","page","type-page","status-publish","hentry","category-reports"],"aioseo_notices":[],"aioseo_head":"\n\t\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\n\t\t