{"id":469,"date":"2018-11-14T20:36:55","date_gmt":"2018-11-14T20:36:55","guid":{"rendered":"http:\/\/www.cantabsoftware.co.uk\/astrodb\/?p=469"},"modified":"2018-11-14T20:38:47","modified_gmt":"2018-11-14T20:38:47","slug":"m27-dumbbell-nebula-planetary-nebula-in-vulpecula","status":"publish","type":"post","link":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/?p=469","title":{"rendered":"M27 Dumbbell Nebula (Planetary Nebula in Vulpecula)"},"content":{"rendered":"<p>The nebula lies about a quarter of the way from Altair to Deneb and consists of gases expelled from the central star that are being excited by the strong UV radiation emitted by this star and emit strongly at certain wavelengths.<br \/>\nTaken on 24-9-18, 12 subs each of LRGB, 120s exposures at 1&#215;1 binning with a QSI 683 camera and a 300mm Orion Optics AG12. I&#8217;ve been working my way through Warren Keller&#8217;s book on PixInsight and this is my first attempt to process a set of subframes entirely with PixInsight. Compare the final result with 1 of the raw luminance subframes.<\/p>\n<div id=\"attachment_471\" style=\"width: 2316px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27_LRGB_SCurve_LocHistEqualisationx2PassWithRangeSelFilter_CosCor_1_CurvTransSatur80.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-471\" class=\"size-full wp-image-471\" src=\"http:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27_LRGB_SCurve_LocHistEqualisationx2PassWithRangeSelFilter_CosCor_1_CurvTransSatur80.jpg\" alt=\"\" width=\"2306\" height=\"2384\" srcset=\"https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27_LRGB_SCurve_LocHistEqualisationx2PassWithRangeSelFilter_CosCor_1_CurvTransSatur80.jpg 2306w, https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27_LRGB_SCurve_LocHistEqualisationx2PassWithRangeSelFilter_CosCor_1_CurvTransSatur80-290x300.jpg 290w, https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27_LRGB_SCurve_LocHistEqualisationx2PassWithRangeSelFilter_CosCor_1_CurvTransSatur80-768x794.jpg 768w, https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27_LRGB_SCurve_LocHistEqualisationx2PassWithRangeSelFilter_CosCor_1_CurvTransSatur80-990x1024.jpg 990w\" sizes=\"auto, (max-width: 2306px) 100vw, 2306px\" \/><\/a><p id=\"caption-attachment-471\" class=\"wp-caption-text\">M27 Final<\/p><\/div>\n<div id=\"attachment_472\" style=\"width: 3336px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27-0001L.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-472\" class=\"size-full wp-image-472\" src=\"http:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27-0001L.jpg\" alt=\"\" width=\"3326\" height=\"2504\" srcset=\"https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27-0001L.jpg 3326w, https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27-0001L-300x226.jpg 300w, https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27-0001L-768x578.jpg 768w, https:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2018\/11\/M27-0001L-1024x771.jpg 1024w\" sizes=\"auto, (max-width: 3326px) 100vw, 3326px\" \/><\/a><p id=\"caption-attachment-472\" class=\"wp-caption-text\">M27 &#8211; One of the raw luminance subframes<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The nebula lies about a quarter of the way from Altair to Deneb and consists of gases expelled from the central star that are being excited by the strong UV radiation emitted by this star and emit strongly at certain &hellip; <a href=\"https:\/\/www.cantabsoftware.co.uk\/astrodb\/?p=469\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-469","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=\/wp\/v2\/posts\/469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=469"}],"version-history":[{"count":3,"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=\/wp\/v2\/posts\/469\/revisions"}],"predecessor-version":[{"id":474,"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=\/wp\/v2\/posts\/469\/revisions\/474"}],"wp:attachment":[{"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cantabsoftware.co.uk\/astrodb\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}