{"id":237,"date":"2026-04-08T15:08:18","date_gmt":"2026-04-08T07:08:18","guid":{"rendered":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/?page_id=237"},"modified":"2026-04-09T09:25:15","modified_gmt":"2026-04-09T01:25:15","slug":"multi-color-imager","status":"publish","type":"page","link":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/?page_id=237","title":{"rendered":"Multi-Color Imager"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">1. Simultaneous Multi-band Imaging<\/h3>\n\n\n\n<p>The Multi-Color Imager enables <strong>simultaneous multi-band observations<\/strong>, acquiring images in the <strong>g, r, i, and z bands<\/strong> at the same time. This capability significantly improves photometric observing efficiency by eliminating sequential filter switching.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. System Configuration<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Beam-Splitting Optics<\/strong><br>A beam-splitter assembly consisting of three dichroic mirrors directs incoming light into separate optical paths. Each path is equipped with a dedicated filter placed in front of the CCD detector, allowing simultaneous imaging in the target wavelength bands.<\/li>\n\n\n\n<li><strong>CCD Detectors<\/strong><br>Three cryogenically cooled <strong>SI-1100 cameras<\/strong> equipped with <strong>E2V 4k \u00d7 2k CCD sensors<\/strong> (15 \u03bcm pixel size).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Control System<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>All four observing bands are operated through a unified master control software responsible for synchronized image acquisition.<\/li>\n\n\n\n<li>The system is being developed to support <strong>remote and automated observing operations<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Current Status<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CCD units are being prepared for long-duration low-temperature operational testing.<\/li>\n\n\n\n<li>A dedicated mounting frame and center-of-gravity adjustment platform are under design to improve balance and mechanical stability.<\/li>\n\n\n\n<li>Cable routing solutions, including drag chains and fixed anchor points, are being planned to prevent interference and excessive bending during instrument rotation while maintaining cooling and vacuum efficiency.<\/li>\n\n\n\n<li>Routine inspection procedures and replacement component lists are being established in accordance with observatory operational protocols.<\/li>\n<\/ul>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e534cc5e79f&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e534cc5e79f\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"795\" height=\"450\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u72473-1.png\" alt=\"\" class=\"wp-image-239\" srcset=\"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u72473-1.png 795w, https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u72473-1-300x170.png 300w, https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u72473-1-768x435.png 768w\" sizes=\"auto, (max-width: 795px) 100vw, 795px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"\u653e\u5927\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69e534cc5e972&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69e534cc5e972\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"681\" height=\"906\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u724710.jpg\" alt=\"\" class=\"wp-image-240\" srcset=\"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u724710.jpg 681w, https:\/\/www.astro.ncu.edu.tw\/ncutwom\/wp-content\/uploads\/2026\/04\/\u5716\u724710-225x300.jpg 225w\" sizes=\"auto, (max-width: 681px) 100vw, 681px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"\u653e\u5927\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>1. Simultaneous Multi-band Imaging The Multi-Color Imag [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-237","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=\/wp\/v2\/pages\/237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=237"}],"version-history":[{"count":2,"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=\/wp\/v2\/pages\/237\/revisions"}],"predecessor-version":[{"id":290,"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=\/wp\/v2\/pages\/237\/revisions\/290"}],"wp:attachment":[{"href":"https:\/\/www.astro.ncu.edu.tw\/ncutwom\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}