{"id":11129,"date":"2020-05-18T11:07:55","date_gmt":"2020-05-18T21:07:55","guid":{"rendered":"http:\/\/www.eaobservatory.org\/jcmt\/?page_id=11129"},"modified":"2020-05-27T16:01:20","modified_gmt":"2020-05-28T02:01:20","slug":"ozone-lines","status":"publish","type":"page","link":"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/ozone-lines\/","title":{"rendered":"Ozone Lines"},"content":{"rendered":"<p><span lang=\"en\">Ozone lines are known to impact sub-mm astronomical observations. This page introduce how to recognize ozone line in the spectra.<br \/>\n<\/span><\/p>\n<h2>Ozone line frequencies<\/h2>\n<p>The frequencies of Ozone lines can be found using the JPL catalog browser form shown below.<\/p>\n<ul>\n<li><a href=\"https:\/\/spec.jpl.nasa.gov\/\">JPL molecular spectroscopy top page<\/a><\/li>\n<li><a href=\"https:\/\/spec.jpl.nasa.gov\/ftp\/pub\/catalog\/catform.html\">JPL catalog browser form<\/a><\/li>\n<\/ul>\n<h2>How to recognize the line?<\/h2>\n<p>Ozone lines are broad unexpected features that can show up as emission or absorption features in a spectrum. They are not connected to known astronomical spectral lines.<\/p>\n<div id=\"attachment_11230\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183.png\"><img aria-describedby=\"caption-attachment-11230\" loading=\"lazy\" class=\"wp-image-11230\" src=\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-1024x543.png\" alt=\"\" width=\"600\" height=\"318\" srcset=\"https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-1024x543.png 1024w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-300x159.png 300w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-768x407.png 768w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-1536x814.png 1536w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-2048x1085.png 2048w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-250x132.png 250w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Uu-ozoneline-248183-150x79.png 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><p id=\"caption-attachment-11230\" class=\"wp-caption-text\">248.183 GHz ozone line in emission in an `\u016a`\u016b spectra<\/p><\/div>\n<div id=\"attachment_11201\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line.png\"><img aria-describedby=\"caption-attachment-11201\" loading=\"lazy\" class=\"wp-image-11201\" src=\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-300x143.png\" alt=\"\" width=\"600\" height=\"286\" srcset=\"https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-300x143.png 300w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-1024x488.png 1024w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-768x366.png 768w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-1536x732.png 1536w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-2048x976.png 2048w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-250x119.png 250w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/HARP-ozone-line-150x72.png 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><p id=\"caption-attachment-11201\" class=\"wp-caption-text\">Example of an ozone line in HARP data<\/p><\/div>\n<p>To select topocentric coordinate (to compare with ozone line frequencies) in the GAIA spectrum window select Coords\/StdOfRest and then select topocentric.<\/p>\n<p><a href=\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia.png\"><img loading=\"lazy\" class=\"aligncenter wp-image-11200 size-large\" src=\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-1024x787.png\" alt=\"\" width=\"830\" height=\"638\" srcset=\"https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-1024x787.png 1024w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-300x230.png 300w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-768x590.png 768w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-1536x1180.png 1536w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-2048x1573.png 2048w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-195x150.png 195w, https:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2020\/05\/Ozone-identification-topocentric-gaia-150x115.png 150w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/a><\/p>\n<h2>Uu list of brighter Ozone lines<\/h2>\n<p>The following are a list of strong Ozone lines in the `\u016a`\u016b band. The first number is the topocentirc frequency in GHz.<\/p>\n<ul>\n<li>231.281511 GHz<\/li>\n<li>235.709.8550 GHz<\/li>\n<li>237.1461160 GHz<\/li>\n<li>239.0932790 GHz<\/li>\n<li>242.3186880 GHz<\/li>\n<li>243.4537760 GHz<\/li>\n<li>248.1833900 GHz<\/li>\n<li>249.7885520 GHz<\/li>\n<li>249.9619600\u00a0 GHz<\/li>\n<li>258.7161800 GHz<\/li>\n<li>263.6926000 GHz<\/li>\n<li>267.2665700 GHz<\/li>\n<li>273.0509000 GHz<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ozone lines are known to impact sub-mm astronomical observations. This page introduce how to recognize ozone line in the spectra. Ozone line frequencies The frequencies of Ozone lines can be found using the JPL catalog browser form shown below. JPL molecular spectroscopy top page JPL catalog browser form How to\u2026 <a class=\"continue-reading-link\" href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/ozone-lines\/\">Continue reading<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":162,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/11129"}],"collection":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/comments?post=11129"}],"version-history":[{"count":22,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/11129\/revisions"}],"predecessor-version":[{"id":11231,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/11129\/revisions\/11231"}],"up":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/162"}],"wp:attachment":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/media?parent=11129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}