{"id":45,"date":"2018-10-10T04:10:38","date_gmt":"2018-10-10T04:10:38","guid":{"rendered":"http:\/\/bluemuse.univ-lyon1.fr\/?page_id=45"},"modified":"2025-06-26T09:36:58","modified_gmt":"2025-06-26T09:36:58","slug":"characteristics","status":"publish","type":"page","link":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/characteristics\/","title":{"rendered":"Characteristics (old)"},"content":{"rendered":"
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BlueMUSE will cover in one setting the 350-600 nm spectral range at R~4000, expanding the MUSE spectral range (480-930 nm) towards the blue and near-UV at double the spectral resolution. With a field of view of 2 arcmin2<\/sup>, BlueMUSE will also double the sky area presently offered by MUSE. As with MUSE, BlueMUSE will achieve exquisite end-to-end throughput (e.g. 35% at 480 nm, 20 % at 350 nm), 100% sky coverage, high stability and high efficiency.<\/p>\n

 <\/h4>\n\n\n
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Comparison of BlueMUSE end-to-end throughput (blue curve \/ shaded region, including telescope and atmosphere) with the MUSE throughput (red curve). The top and bottom panels show the relative atmospheric transmission and emission, respectively, over the same wavelength range.<\/figcaption><\/figure>\n\n\n\n

INTEGRAL FIELD OVER A LARGE FIELD OF VIEW<\/strong><\/h4>\n\n\n\n

Using the now well-trained technology of image slicers, the optical design allows to fully cover up to 2 arcmin2<\/sup> FoV on sky and retrieve the full 3D (spatial and spectral) information in a single exposure.<\/strong><\/p>\n\n\n\n

OPTIMISED FOR MEDIUM RESOLUTION IN THE BLUE<\/strong><\/h4>\n\n\n\n

Blue-MUSE will complement the MUSE instrument by observing at bluer wavelengths, from the atmospheric cut-off to the middle of the R band. It will have a much higher spectral resolution, with R=4000 in average over the spectral range.<\/strong><\/p>\n\n\n\n

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Comparison of BlueMUSE and MUSE spectral resolution. BlueMUSE will have > 2x the MUSE spectral resolution in the region of wavelength overlap.<\/figcaption><\/figure>\n\n\n\n

HIGH TRANSMISSION<\/strong><\/h4>\n\n\n\n

Like MUSE, the use of image slicers and the optimization of the instrument for a single observing mode allow for an optimal transmission overall, even higher than traditional slit spectographs when accounting for the slit losses.<\/strong><\/p>\n\n\n\n

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Comparison of the BlueMUSE and MUSE end-to-end transmissions with other VLT instruments. A 15% is included for slit spectrographs to account for slit losses.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

BlueMUSE will cover in one setting the 350-600 nm spectral range at R~4000, expanding the MUSE spectral range (480-930 nm) towards the blue and near-UV at double the spectral resolution. With a field of view of 2 arcmin2, BlueMUSE will also double the sky area presently offered by MUSE. As with MUSE, BlueMUSE will achieve… Read More »Characteristics (old)<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"class_list":["post-45","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages\/45","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/comments?post=45"}],"version-history":[{"count":24,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages\/45\/revisions"}],"predecessor-version":[{"id":774,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages\/45\/revisions\/774"}],"wp:attachment":[{"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/media?parent=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}