{"id":3929,"date":"2018-12-04T12:35:42","date_gmt":"2018-12-04T12:35:42","guid":{"rendered":"http:\/\/www.popastro.com\/main_spa1\/deepsky\/?page_id=3929"},"modified":"2018-12-04T12:35:42","modified_gmt":"2018-12-04T12:35:42","slug":"november-2018","status":"publish","type":"page","link":"https:\/\/www.popastro.com\/deepsky\/november-2018\/","title":{"rendered":"November 2018"},"content":{"rendered":"

This month, five section members sent in a total of twenty digital images and two sketches.<\/p>\n

Steve Norrie<\/strong> used a Celestron C9.25 SCT and StarlightXpress Trius 694 camera plus red, green and blue filters (and narrow band filters for the Hubble palette) to produce twelve deep sky images.<\/p>\n

In the constellation of Perseus Steve imaged parts of the the Heart emission nebula:\u00a0 the first image is a close up of Melotte 15, the open cluster at the core of the nebulosity.<\/p>\n

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Melotte 15<\/figcaption><\/figure>\n

It is the young, massive stars in Melotte 15, some of almost 50 solar masses, which provide the intense ultra violet radiation responsible for ionising the nebula.<\/p>\n

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NGC 896<\/figcaption><\/figure>\n

NGC 896 lies at the western edge of the heart nebula.\u00a0 It is the brightest part and was the first to be discovered.<\/p>\n

Steve also imaged emission nebulae IC 5146 the Cocoon nebula, Sh2 – 101 the Tulip nebula and Sh2 – 112;\u00a0 all in Cygnus:<\/p>\n

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IC 5146<\/figcaption><\/figure>\n
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Sh2 – 101<\/figcaption><\/figure>\n
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Sh2 – 112<\/figcaption><\/figure>\n

Below are another two emission nebulae: a\u00a0 part of NGC 2244 the Rosette nebula in Monoceros and Sh2 – 155 the Cave nebula in Cepheus.<\/p>\n

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NGC 2244<\/figcaption><\/figure>\n
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Sh2 – 155<\/figcaption><\/figure>\n

The remaining five images are all galaxies:\u00a0 NGC 7331 in Pegasus, NGC 891 in Andromeda, NGC 6946 on the Cepheus\/Cygnus border, NGC 925 in Triangulum and M74 in Pisces:<\/p>\n

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NGC 7331<\/figcaption><\/figure>\n
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NGC 891<\/figcaption><\/figure>\n
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NGC 6946<\/figcaption><\/figure>\n
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NGC 925<\/figcaption><\/figure>\n
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M74<\/figcaption><\/figure>\n

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Michael Kinns<\/strong> used a 200mm Orion Optics f6 Newtonian reflector\u00a0 to sketch two open clusters, NGC 752 in the constellation of Andromeda and M34 in Perseus:<\/p>\n

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NGC 752<\/figcaption><\/figure>\n
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M34<\/figcaption><\/figure>\n

M34 has an apparent magnitude of 5.5, so should be a binocular target under reasonable conditions and even a naked eye object from a dark sky site.\u00a0 It is reckoned to be around 200 million years old, about 7.5 light years across and 1,500 light years from the Earth.<\/p>\n

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Paul Brierley<\/strong> imaged emission nebula IC 5146, the Cocoon nebula, in the constellation of Cygnus with an Altair Wave 115 EDT refractor and an Atik 428 Ex mono camera:<\/p>\n

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IC 5146<\/figcaption><\/figure>\n

IC 5146 is around 4,000 light years from the Earth, so the 12 arcminute diameter equates to about 15 light years.\u00a0 The dark nebula associated with the emission nebulosity is designated Barnard 168.<\/p>\n

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David Davies<\/strong> imaged open cluster NGC 188, also known as Caldwell 1, in the constellation of Cepheus, using an APM 107mm refractor and QSI 583 mono camera plus red, green and blue filters.<\/p>\n

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NGC 188<\/figcaption><\/figure>\n

NGC 188 lies well above the the milky way galactic plane, away from its greatest gravitational influence;\u00a0 which explains why, at about 7 billion years old, it hasn’t dispersed.\u00a0\u00a0 It is about 5,000 light years from the Earth.<\/p>\n

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Mark Beveridge<\/strong> sent in six digital images.\u00a0 The first three are galaxies which lie in the constellation of Pegasus:\u00a0 NGC 7217, NGC 1530 and NGC 7318 (Stephan’s Quintet).<\/p>\n

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NGC 7217<\/figcaption><\/figure>\n
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NGC 1530<\/figcaption><\/figure>\n
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NGC 7318<\/figcaption><\/figure>\n

Stephan’s Quintet is made up of NGC 7318A and B (a pair of colliding galaxies), NGC 7319, NGC 7320,\u00a0 and NGC7317.\u00a0 Four of the five (aka Hickson Compact group 92) are physically associated and considered likely to merge over time.<\/p>\n

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The next two galaxy images are NGC 7242 in Lacerta and NGC 925 in Triangulum:<\/p>\n

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NGC 7242<\/figcaption><\/figure>\n

NGC 7242 is a member of a group of galaxies designated WBL 679.\u00a0 A number of the fainter galaxies have been captured in this image.<\/p>\n

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NGC 925<\/figcaption><\/figure>\n

Mark’s sixth image is 0f emission nebula NGC 7380, the Wizard nebula, in Cepheus:<\/p>\n

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NGC 7380<\/figcaption><\/figure>\n

 <\/p>\n

Dave Finnigan<\/em><\/p>\n

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

This month, five section members sent in a total of twenty digital images and two sketches. Steve Norrie used a Celestron C9.25 SCT and StarlightXpress Trius 694 camera plus red, green and blue filters (and narrow band filters for theRead 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":[],"tags":[],"class_list":["post-3929","page","type-page","status-publish","hentry"],"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