{"id":601,"date":"2025-03-31T15:04:58","date_gmt":"2025-03-31T15:04:58","guid":{"rendered":"https:\/\/bluemuse.univ-lyon1.fr\/?page_id=601"},"modified":"2025-03-31T15:07:59","modified_gmt":"2025-03-31T15:07:59","slug":"instrument-concept","status":"publish","type":"page","link":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/instrument-concept\/","title":{"rendered":"Instrument Concept"},"content":{"rendered":"\n

BlueMUSE instrument concept has been validated through the Phase A review. <\/p>\n\n\n\n

It is based on a balanced approach between MUSE<\/a> concept legacy and several technology improvements in order to meet the challenges coming from BlueMUSE unique characteristics<\/a>.<\/p>\n\n\n\n

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Overall architecture<\/strong><\/p>\n\n\n\n

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BlueMUSE Architecture<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
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Optical design with one chanel<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n
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BlueMUSE Concept design is a combination of several sub systems (in order of appearance for the light path):<\/p>\n\n\n\n

The Calibration Unit<\/mark> <\/strong>illuminates the instrument with a calibration beam that mimic both the VLT f-number and its pupil illumination. The Fore Optics<\/mark><\/strong> reshapes the VLT focus image (field rotation, magnification, anamorphosis).<\/p>\n\n\n\n

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Calibration Unit top part<\/em> in FO frame<\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
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Fore Optics elements<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n

The Splitting & Relay Optics<\/mark><\/strong> splits the FoV in 16 channels and relay the light towards the entrance of an IFU.<\/p>\n\n\n\n

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SRO Architecture<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
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Folding Mirror 1<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n

Each channel has an Integral Field Unit<\/mark><\/strong> that includes an Image Slicer<\/mark><\/strong>, a Spectrograph<\/mark><\/strong> and a Detector Vessel<\/mark><\/strong>. <\/p>\n\n\n\n

The Image Slicer cuts and rearrange the 2D sub FoV into a 1D pseudo slit. It slices the FoV coming from the SRO into 48 slits that are rearranged in a long slit at the entrance of the spectrograph. <\/p>\n\n\n\n

The Spectrograph produces the spectra of the mini slits and images them onto the detector. <\/p>\n\n\n\n

The Instrument Detector System detects the light dispersed by the spectrograph, convert it and share it with the Data Reduction Software<\/mark><\/strong>, that will remove the instrument signature, correct for environmental effects and prepare the data cube. Each detector Vessel includes one 4k x 4k CCD with its detector head and a cryocooler unit.<\/p>\n\n\n\n

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Image Slicer<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
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Instrument Detector System<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Spectrograph<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

A Vacuum and Cryogenics Support<\/mark><\/strong> is responsible for providing vacuum and cooling to the detector vessels.<\/p>\n\n\n\n

The above sub systems are structurally supported by the Instrument Main Structure<\/mark><\/strong>, which is also the interface with the Nasmyth platform. A passive Thermal Enclosure<\/mark><\/strong> is installed around the instrument to reduce the external temperature variation during the night and improve instrument stability.<\/p>\n\n\n\n

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Instrument Main Structure on Nasmyth platform<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
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Thermal Enclosure<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n

BlueMUSE has several functions and devices and is therefore also supported by a control system, that is including both Electronics and Software control<\/mark><\/strong>.<\/p>\n\n\n\n

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\"\"<\/figure><\/div>\n<\/div>\n\n\n\n
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<\/p>\n","protected":false},"excerpt":{"rendered":"

BlueMUSE instrument concept has been validated through the Phase A review. It is based on a balanced approach between MUSE concept legacy and several technology improvements in order to meet the challenges coming from BlueMUSE unique characteristics. Overall architecture BlueMUSE Concept design is a combination of several sub systems (in order of appearance for the… Read More »Instrument Concept<\/span><\/a><\/p>\n","protected":false},"author":2,"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-601","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages\/601","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/comments?post=601"}],"version-history":[{"count":24,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages\/601\/revisions"}],"predecessor-version":[{"id":655,"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/pages\/601\/revisions\/655"}],"wp:attachment":[{"href":"https:\/\/bluemuse.univ-lyon1.fr\/index.php\/wp-json\/wp\/v2\/media?parent=601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}