{"id":1154,"date":"2014-06-06T20:49:16","date_gmt":"2014-06-07T04:49:16","guid":{"rendered":"http:\/\/jazzistentialism.com\/blog\/?p=1154"},"modified":"2015-02-11T23:41:40","modified_gmt":"2015-02-12T07:41:40","slug":"theta-muscae","status":"publish","type":"post","link":"http:\/\/jazzistentialism.com\/blog\/?p=1154","title":{"rendered":"Theta Muscae"},"content":{"rendered":"<p>Spectroscopic observations of the magnitude 5.66 Wolf-Rayet star Theta Muscae reduced using BASS.<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1192\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled.jpg\" alt=\"ThetaMus_Scaled\" width=\"1100\" height=\"500\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled.jpg 1100w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled-300x136.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled-1024x465.jpg 1024w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/><\/a><\/p>\n<p><!--more--><\/p>\n<h3>Image details:<\/h3>\n<ul>\n<li>Star: HD 113904 (Theta Muscae)<\/li>\n<li>Telescope: 0.35m RC f\/7<\/li>\n<li>Spectroscope: <a href=\"http:\/\/jazzistentialism.com\/blog\/?attachment_id=1195\">Spectra L200<\/a><\/li>\n<li>Grating: 600 l\/mm<\/li>\n<li>Camera: Atik 314L+<\/li>\n<li>Date: 2014-06-06 13:23:07 UT<\/li>\n<li>Exposure: 300s x 12<\/li>\n<li>Dispersion: 1.08 A\/pixel<\/li>\n<li>R = 2715 @5889.94\u00c5<\/li>\n<\/ul>\n<p>Profile (click to enlarge):<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/Theta-Muscae.bass_.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1158\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/Theta-Muscae.bass_.jpg\" alt=\"Theta Muscae.bass\" width=\"1100\" height=\"500\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/Theta-Muscae.bass_.jpg 1100w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/Theta-Muscae.bass_-300x136.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/Theta-Muscae.bass_-1024x465.jpg 1024w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/><\/a><\/p>\n<h3>Additional references:<\/h3>\n<p><a href=\"http:\/\/adsabs.harvard.edu\/full\/1977A%26A....54..607M\">http:\/\/adsabs.harvard.edu\/full\/1977A%26A&#8230;.54..607M<\/a><\/p>\n<p><a href=\"http:\/\/en.wikipedia.org\/wiki\/Theta_Muscae\">http:\/\/en.wikipedia.org\/wiki\/Theta_Muscae<\/a><\/p>\n<p>Update:<\/p>\n<p>An additional 12 x 300s images acquired on 140610, averaged using MaxIM DL and shown\u00a0in the following profile:<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus140610.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1173\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus140610.jpg\" alt=\"ThetaMus140610\" width=\"1100\" height=\"500\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus140610.jpg 1100w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus140610-300x136.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus140610-1024x465.jpg 1024w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/><\/a><\/p>\n<p>First attempts at normalising profiles 10 &#8211; 12 June, 2014:<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus10to12June2014.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1176\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus10to12June2014.jpg\" alt=\"ThetaMus10to12June2014\" width=\"2387\" height=\"1333\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus10to12June2014.jpg 2387w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus10to12June2014-300x167.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus10to12June2014-1024x571.jpg 1024w\" sizes=\"(max-width: 2387px) 100vw, 2387px\" \/><\/a>A composite of 5 profiles acquired from data spanning 6 June to 15 June. Hardware adjustments have resulted in some offset of the profiles between sessions.<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMuscaeJune2014.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1180\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMuscaeJune2014.jpg\" alt=\"ThetaMuscaeJune2014\" width=\"1100\" height=\"500\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMuscaeJune2014.jpg 1100w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMuscaeJune2014-300x136.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMuscaeJune2014-1024x465.jpg 1024w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/><\/a><\/p>\n<p>Use of vertical offsets clarity (click to enlarge):<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1192\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled.jpg\" alt=\"ThetaMus_Scaled\" width=\"1100\" height=\"500\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled.jpg 1100w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled-300x136.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/ThetaMus_Scaled-1024x465.jpg 1024w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Additional data acquired over the following weeks combined in the chart below. Note the periodic nature of the C III region (click to enlarge):<\/p>\n<p><a href=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/onepointcalib1c.jpg\"><img loading=\"lazy\" class=\"alignleft size-full wp-image-1201\" src=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/onepointcalib1c.jpg\" alt=\"onepointcalib1c\" width=\"1100\" height=\"500\" srcset=\"http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/onepointcalib1c.jpg 1100w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/onepointcalib1c-300x136.jpg 300w, http:\/\/jazzistentialism.com\/blog\/wp-content\/uploads\/2014\/06\/onepointcalib1c-1024x465.jpg 1024w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spectroscopic observations of the magnitude 5.66 Wolf-Rayet star Theta Muscae reduced using BASS.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[19],"tags":[],"_links":{"self":[{"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1154"}],"collection":[{"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1154"}],"version-history":[{"count":24,"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1154\/revisions"}],"predecessor-version":[{"id":1554,"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1154\/revisions\/1554"}],"wp:attachment":[{"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1154"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/jazzistentialism.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}