{"id":273,"date":"2016-10-29T15:02:54","date_gmt":"2016-10-29T21:02:54","guid":{"rendered":"http:\/\/13thstone.com\/blog\/?p=273"},"modified":"2016-10-29T15:02:54","modified_gmt":"2016-10-29T21:02:54","slug":"messier-33-in-halrgb","status":"publish","type":"post","link":"https:\/\/13thstone.com\/blog\/?p=273","title":{"rendered":"Messier 33 in HaLRGB"},"content":{"rendered":"<p><span style=\"color: #993300;\">It is hard to believe I haven&#8217;t imaged since the first week of August and we are about to start November in a couple of days. I love the winter target selection and I probably would have selected something besides the Triangulum Galaxy if I weren&#8217;t boxed in by pine trees at my imaging location such that near-horizon targets just can&#8217;t be reached. I picked Messier 33 for last night because it was high in the sky all night and provided plenty of imaging time for a multi-channel attempt. This represents about 6.2 hours of total data&#8230; 20x180s each R, G, B&#8230; 34x180s Lum&#8230; 9x600s Ha.\u00a0I tried Silvercup&#8217;s HaRGBCombination Script for PixInsight, but it kept locking up my client, so I ended up using the\u00a0Vicent Peris method that Harry has in his tutorial. The post-processing is trickier already with multiple channels and trying to blend in narrowband, but I kinda made it more difficult for myself by binning the color channels 2&#215;2. I figured out the hard way that I needed to go back and shoot dark subframes that were also binned 2&#215;2 in order to register and calibrate the color channels. It was a beautiful night out and a great learning experience. Let&#8217;s hope the next one isn&#8217;t another 3 months out! \ud83d\ude42<\/span><\/p>\n<p><a href=\"http:\/\/13thstone.com\/blog\/wp-content\/uploads\/2016\/10\/M33.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-274\" src=\"http:\/\/13thstone.com\/blog\/wp-content\/uploads\/2016\/10\/M33-300x228.jpg\" alt=\"Messier 33\" width=\"300\" height=\"228\" srcset=\"https:\/\/13thstone.com\/blog\/wp-content\/uploads\/2016\/10\/M33-300x228.jpg 300w, https:\/\/13thstone.com\/blog\/wp-content\/uploads\/2016\/10\/M33-1024x777.jpg 1024w, https:\/\/13thstone.com\/blog\/wp-content\/uploads\/2016\/10\/M33.jpg 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It is hard to believe I haven&#8217;t imaged since the first week of August and we are about to start November in a couple of days. I love the winter target selection and I probably would have selected something besides the Triangulum Galaxy if I weren&#8217;t boxed in by pine trees at my imaging location &hellip; <a href=\"https:\/\/13thstone.com\/blog\/?p=273\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Messier 33 in HaLRGB<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-273","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4P0Vj-4p","_links":{"self":[{"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=273"}],"version-history":[{"count":1,"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/273\/revisions"}],"predecessor-version":[{"id":275,"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/273\/revisions\/275"}],"wp:attachment":[{"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/13thstone.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}