{"id":1999,"date":"2018-12-10T14:22:54","date_gmt":"2018-12-10T14:22:54","guid":{"rendered":"http:\/\/www.star-gazing.co.uk\/WebPage\/?p=1999"},"modified":"2018-12-10T14:39:31","modified_gmt":"2018-12-10T14:39:31","slug":"cometfun181210","status":"publish","type":"post","link":"https:\/\/www.star-gazing.co.uk\/WebPage\/cometfun181210\/","title":{"rendered":"Pre-Christmas Comet fun"},"content":{"rendered":"<p>So! Comet 46P \/ Wirtanen (The original target of the Rosetta and Philae mission) is huge!<\/p>\n<p>It&#8217;s apparent size is a little over 1\u00b0, making it larger than the apparent size of The Moon (or Sun).<\/p>\n<p>It is also supposedly bright enough to be a naked eye object.<br \/>\nBut being so big, it&#8217;s light is spread out over a wide area of sky, making it a bit more difficult to make out, especially if you have some light pollution, like me.<\/p>\n<p>It&#8217;s not visible from my location with the naked eye, but it is just about visible in my 10&#215;50 finder scope. Very extensive and faint, a bit like Messier 33 in Triangulum.<\/p>\n<p>A pair of 15&#215;70 binoculars really do it more justice, showing it much brighter and just how extensive the coma reaches out from the pseudo nucleus.<\/p>\n<p>Here&#8217;s an image I took on the 9th of December.<\/p>\n<p><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2001\" src=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P.png\" alt=\"\" width=\"436\" height=\"245\" srcset=\"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P.png 1500w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P-600x338.png 600w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P-300x169.png 300w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P-768x432.png 768w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P-1024x576.png 1024w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/20181209-Comet46P-210x118.png 210w\" sizes=\"auto, (max-width: 436px) 100vw, 436px\" \/><\/a><\/p>\n<p>Using the subs I took, I also made an animation showing the\u00a0movement of the comet during the duration of the imaging session.<\/p>\n<p><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PAnimationStackSmall.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2002\" src=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PAnimationStackSmall.gif\" alt=\"\" width=\"440\" height=\"305\" \/><\/a><\/p>\n<p>Travelling northwards (that makes a change!), 46P will at its brightest on the 17th of December.<br \/>\nAt this time it will be located between The Hyades &amp; The Pleiades in Taurus, so will be very easy to find.<\/p>\n<p><strong><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/comet-46p\" target=\"_blank\" rel=\"noopener\">Click here to download my guide for Comet 46P.<\/a><\/strong><\/p>\n<p>How big is the Coma? I have made a composite image showing the Comet against M42, The Orion Nebula. Both images taken with the same setup on the 8th of December.<\/p>\n<p><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2015\" src=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall.png\" alt=\"\" width=\"1500\" height=\"1100\" srcset=\"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall.png 1500w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall-600x440.png 600w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall-300x220.png 300w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall-768x563.png 768w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall-1024x751.png 1024w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/46PM42ComparisonSmall-210x154.png 210w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/p>\n<p>While I was in the area, I wanted to do some more comet fun, so I wandered up to catch Comet 64P \/ Swift-Gehrels, which was\u00a0just starting to cut across the constellation of Triangulum that evening.<br \/>\nIt&#8217;s a lot smaller and fainter, at about 10th magnitude, but is still showing up very nicely in the image.<\/p>\n<p><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2003\" src=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P.png\" alt=\"\" width=\"534\" height=\"355\" srcset=\"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P.png 1500w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P-600x399.png 600w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P-300x200.png 300w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P-768x511.png 768w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P-1024x681.png 1024w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/2018-Comet64P-210x140.png 210w\" sizes=\"auto, (max-width: 534px) 100vw, 534px\" \/><\/a><\/p>\n<p>Just before I finished, I pointed the telescope towards Mars so I could capture Neptune close to it before they move too far apart from one another. Here&#8217;s the result.<\/p>\n<p><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2011\" src=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat.png\" alt=\"\" width=\"531\" height=\"353\" srcset=\"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat.png 1500w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat-600x399.png 600w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat-300x200.png 300w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat-768x511.png 768w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat-1024x681.png 1024w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/MarsNeptuneFlat-210x140.png 210w\" sizes=\"auto, (max-width: 531px) 100vw, 531px\" \/><\/a><\/p>\n<p>All images taken using a 72mm refractor and a Nikon D750 DSLR.<\/p>\n<p>Comet 64P&#8217;s path for November and December is below.<br \/>\n(Click on the map for a bigger view)<\/p>\n<p>For a black on white printable version, <a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/38PPathJanuaryInv.jpg\" target=\"_blank\" rel=\"noopener\"><strong>Click Here<\/strong><\/a>.<\/p>\n<p><a href=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2004 size-full\" src=\"http:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19.jpg\" alt=\"\" width=\"1320\" height=\"912\" srcset=\"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19.jpg 1320w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19-600x415.jpg 600w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19-300x207.jpg 300w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19-768x531.jpg 768w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19-1024x707.jpg 1024w, https:\/\/www.star-gazing.co.uk\/WebPage\/wp-content\/uploads\/2018\/12\/64PDec18-Jan19-210x145.jpg 210w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So! Comet 46P \/ Wirtanen (The original target of the Rosetta and Philae mission) is huge! It&#8217;s apparent size is a little over 1\u00b0, making it larger than the apparent size of The Moon (or Sun). It is also supposedly bright enough to be a naked eye object. But being so big, it&#8217;s light is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Pre-Christmas Comet fun - Star-Gazing","description":"So! Comet 46P \/ Wirtanen (The original target of the Rosetta and Philae mission) is huge! It's apparent size is a little over 1\u00b0, making it larger than the appa"},"footnotes":""},"categories":[3,1],"tags":[],"class_list":["post-1999","post","type-post","status-publish","format-standard","hentry","category-blog","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/posts\/1999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/comments?post=1999"}],"version-history":[{"count":12,"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/posts\/1999\/revisions"}],"predecessor-version":[{"id":2008,"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/posts\/1999\/revisions\/2008"}],"wp:attachment":[{"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/media?parent=1999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/categories?post=1999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.star-gazing.co.uk\/WebPage\/wp-json\/wp\/v2\/tags?post=1999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}