{"id":48581,"date":"2026-09-17T10:53:15","date_gmt":"2026-09-17T08:53:15","guid":{"rendered":"https:\/\/www.ieec.cat\/?p=48581"},"modified":"2026-09-17T11:44:47","modified_gmt":"2026-09-17T09:44:47","slug":"one-month-to-the-inauguration-of-the-four-large-sized-telescopes-at-the-ctao-observatory-in-la-palma","status":"publish","type":"post","link":"https:\/\/www.ieec.cat\/en\/one-month-to-the-inauguration-of-the-four-large-sized-telescopes-at-the-ctao-observatory-in-la-palma\/","title":{"rendered":"One month to the inauguration of the four Large-Sized Telescopes at the CTAO observatory in La Palma"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Section&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; background_image=&#8221;https:\/\/www.ieec.cat\/wp-content\/uploads\/2022\/02\/slider-comunicacio.jpg&#8221; max_height=&#8221;130px&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; da_disable_devices=&#8221;off|off|off&#8221; global_colors_info=&#8221;{}&#8221; da_is_popup=&#8221;off&#8221; da_exit_intent=&#8221;off&#8221; da_has_close=&#8221;on&#8221; da_alt_close=&#8221;off&#8221; da_dark_close=&#8221;off&#8221; da_not_modal=&#8221;on&#8221; da_is_singular=&#8221;off&#8221; da_with_loader=&#8221;off&#8221; da_has_shadow=&#8221;on&#8221;][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Section&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;24px||11px|||&#8221; da_disable_devices=&#8221;off|off|off&#8221; global_colors_info=&#8221;{}&#8221; da_is_popup=&#8221;off&#8221; da_exit_intent=&#8221;off&#8221; da_has_close=&#8221;on&#8221; da_alt_close=&#8221;off&#8221; da_dark_close=&#8221;off&#8221; da_not_modal=&#8221;on&#8221; da_is_singular=&#8221;off&#8221; da_with_loader=&#8221;off&#8221; da_has_shadow=&#8221;on&#8221;][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;Unitats de recerca&#8221; module_class=&#8221;ieec-orgs&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;content&#8221; _module_preset=&#8221;default&#8221; text_font=&#8221;|700||on|||||&#8221; text_font_size=&#8221;16px&#8221; header_font=&#8221;|700|||||||&#8221; custom_margin=&#8221;||10px||false|false&#8221; header_font_size_tablet=&#8221;28px&#8221; header_font_size_phone=&#8221;26px&#8221; header_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoiY3VzdG9tX21ldGFfb3JnYW5pemFjaW9uZXMiLCJzZXR0aW5ncyI6eyJiZWZvcmUiOiIiLCJhZnRlciI6IiIsImVuYWJsZV9odG1sIjoib2ZmIn19@[\/et_pb_text][et_pb_post_title author=&#8221;off&#8221; categories=&#8221;off&#8221; comments=&#8221;off&#8221; featured_image=&#8221;off&#8221; admin_label=&#8221;T\u00edtol i data&#8221; module_class=&#8221;ieec-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; title_font=&#8221;Cairo|300|||||||&#8221; title_font_size=&#8221;40px&#8221; meta_font=&#8221;||on||||||&#8221; meta_font_size=&#8221;16px&#8221; title_font_size_tablet=&#8221;35px&#8221; title_font_size_phone=&#8221;30px&#8221; title_font_size_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_post_title][et_pb_text admin_label=&#8221;Subt\u00edtols&#8221; module_class=&#8221;ieec-summary&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Source Sans Pro||on||||||&#8221; text_font_size=&#8221;24px&#8221; text_line_height=&#8221;1.1em&#8221; text_font_size_tablet=&#8221;22px&#8221; text_font_size_phone=&#8221;20px&#8221; text_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<ul>\n<li>The LST (Large-Sized Telescopes) Collaboration of the Cherenkov Telescope Array Observatory (CTAO) reaches a new milestone at these facilities to boost very high-energy gamma-ray astronomy<\/li>\n<li>Spain, alongside Japan, is the top contributor to the development of the LSTs<\/li>\n<li>IEEC researchers at the Institute of Cosmos Sciences (ICCUB), the Institute of Space Sciences (ICE-CSIC), and the Universitat Aut\u00f2noma de Barcelona (UAB) participate in this project<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_post_title title=&#8221;off&#8221; meta=&#8221;off&#8221; module_class=&#8221;ieec-img-container&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||0px||false|false&#8221; border_width_top=&#8221;10px&#8221; border_color_top=&#8221;#406fda&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_post_title][et_pb_text module_class=&#8221;ieec-img-footer&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;||||||||&#8221; text_font_size=&#8221;15px&#8221; text_line_height=&#8221;1.1em&#8221; background_color=&#8221;rgba(64,111,218,0.15)&#8221; custom_margin=&#8221;0px||||false|false&#8221; custom_padding=&#8221;30px|20px|30px|20px|true|true&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>The four Large-Sized Telescopes (LST) on La Palma, in a picture from March 2026. <strong>CTAO<\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">On 15 October 2026, the LST Collaboration of the <\/span><a href=\"https:\/\/www.ieec.cat\/en\/project\/26\/cta\/\"><span style=\"font-weight: 400;\">Cherenkov Telescope Array Observatory<\/span><\/a><span style=\"font-weight: 400;\"> (CTAO) will celebrate the inauguration of the sub-array of four Large-Sized Telescopes (LSTs) that will operate at the CTAO-North site, located in La Palma, in the Canary Islands. These new infrastructures are driven by the CTAO LST Collaboration, an international consortium responsible for the design, construction, and operation of the observatory&#8217;s large telescopes\u2014a state-of-the-art facility intended to boost very high-energy gamma-ray astronomy and explore the most extreme phenomena in the universe.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><a href=\"https:\/\/www.ieec.cat\/en\/\"><span style=\"font-weight: 400;\">Institute of Space Studies of Catalonia<\/span><\/a><span style=\"font-weight: 400;\"> (IEEC \u2014 Institut d\u2019Estudis Espacials de Catalunya) participates in the development of the CTAO and in the design of the Large-Sized Telescopes. <\/span><span style=\"font-weight: 400;\">Four of its researchers\u2014Josep Maria Paredes, Marc Rib\u00f3, David Gasc\u00f3n and Pol Bordas\u2014all of them from the <\/span><a href=\"https:\/\/icc.ub.edu\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Institute of Cosmos Sciences of the University of Barcelona<\/span><\/a><span style=\"font-weight: 400;\"> (ICCUB), have been involved in documenting the process, from the initial design phase to technological deve<\/span><span style=\"font-weight: 400;\">lopment and the scientific goals of the project. IEEC researchers at the <\/span><a href=\"https:\/\/www.ice.csic.es\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Institute of Space Sciences<\/span><\/a><span style=\"font-weight: 400;\"> (ICE-CSIC) and the <\/span><a href=\"https:\/\/www.uab.cat\/web\/universitat-autonoma-de-barcelona-1345467950436.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Universitat Aut\u00f2noma de Barcelona<\/span><\/a><span style=\"font-weight: 400;\"> (UAB) are also participa<\/span><span style=\"font-weight: 400;\">ting in the CTAO.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">The inauguration of the four telescopes marks a key milestone for the development of the CTAO observatory, as it signifies the completion of the construction of all LSTs planned for this site. The first of them, the LST-1, was inaugurated in 2018 and has since been undergoing commissioning under the responsibility of the LST Collaboration. Three new LSTs now join it, which will eventually be accompanied by the Medium-Sized Telescopes (MSTs).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, the w<\/span><span style=\"font-weight: 400;\">ork does not end with this milestone. The LSTs must undergo a thorough commissioning phase by the LST Collaboration before being formally accepted by the CTAO Central Organisation (CTAO ERIC) and begenning operations and the exploitation of so-called &#8220;early science&#8221;. LST-1 is expected to be the first to be accepted during 2027, bringing closer the start of the Observatory\u2019s major scientific output. The design and construction of these telescopes have been carried out by the LST Collaboration, acting as an in-kind contributor to CTAO ERIC and complying with stri<\/span><span style=\"font-weight: 400;\">ct technical requirements.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text module_class=&#8221;section-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; header_2_font_size_tablet=&#8221;23px&#8221; header_2_font_size_phone=&#8221;23px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Spain&#8217;s key role in the project<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; hover_enabled=&#8221;0&#8243; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p><span style=\"font-weight: 400;\">Spain plays a strategic and fundamental role in the CTAO. Together with Japan,<\/span><b> it is the country contributing the most to the development of the LSTs, <\/b><b>accounting for <\/b><b>32% of the project<\/b><span style=\"font-weight: 400;\">. T<\/span><span style=\"font-weight: 400;\">his, together with its role as host country of CTAO-North,<\/span><span style=\"font-weight: 400;\"> gives the Spanish scientific community privileged access to observation time at these facilities, generating an important hub for attracting talent and scientific production in the country.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Under the name CTAO-Spain, the group of institutions dedicated to hardware, software, and science development activities for the observatory are brought together. These groups, distributed across Andalusia, the Canary Islands, Catalonia, and Madrid, include (in alphabetical order):<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Centre for Energy, Environmental and Technological Research (CIEMAT)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Complutense University of Madrid (UCM)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Institute of Astrophysics of Andalusia (IAA-CSIC)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Institute of Cosmos Sciences of the University of Barcelona (ICCUB)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Institute of Space Sciences (ICE-CSIC)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Institute of Space Studies of Catalonia (IEEC)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Institute for High Energy Physics (IFAE)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Instituto de Astrof\u00edsica de Canarias (IAC)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">University of Alcal\u00e1 (UAH)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">University of Ja\u00e9n (UJA)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">In addition to this scientific-technological contribution from the aforementioned entities within the LST Collaboration, industry plays a critical part. <\/span><b>Spanish companies have manufactured essential components of the telescopes<\/b><span style=\"font-weight: 400;\">, such as drive systems, camera mechanics, and infrastructure.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text module_class=&#8221;section-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; hover_enabled=&#8221;0&#8243; header_2_font_size_tablet=&#8221;23px&#8221; header_2_font_size_phone=&#8221;23px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<h2>Project timeline and ICCUB \/ IEEC participation<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">Josep Maria Paredes (ICCUB-IEEC) traces the origins of the CTAO project back more than twenty years. The initial need was<\/span><b> to overcome the sensitivity limitations present in previous instruments<\/b><span style=\"font-weight: 400;\">, such as the H.E.S.S., <\/span><a href=\"https:\/\/www.ieec.cat\/en\/project\/29\/magic\/\"><span style=\"font-weight: 400;\">MAGIC<\/span><\/a><span style=\"font-weight: 400;\">, and VERITAS Cherenkov telescopes, as well as the earlier HEGRA.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Paredes explains: \u201cThe scientific and technological expertise acquired by Spanish groups during their participation in these previous collaborations served as the foundation for their current technical contribution to the CTAO and, specifically, to the LST project.\u201d He also points out that \u201chosting CTAO-North in the Canary Islands guarantees the Spanish scientific community a 10% share of guaranteed observation time, a factor that will enable the execution of local projects and act as a driver for new generations of researchers.\u201d<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_divider color=&#8221;#406fda&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Cairo|700|||||||&#8221; text_text_color=&#8221;#406fda&#8221; text_font_size=&#8221;20px&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Discover the CTAO<\/p>\n<p>[\/et_pb_text][et_pb_video src=&#8221;https:\/\/www.youtube.com\/watch?v=aOiNkuIevp4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_video][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; custom_padding=&#8221;5px|||||&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">Marc Rib\u00f3 (ICCUB-IEEC) took part in the first CTAO science-case meeting in 2006 and has formally led ICCUB&#8217;s contribution to the CTAO since 2010. CTAO represents a paradigm shift because, unlike previous instruments operating in the same energy range, it will function as an <\/span><b>observatory open to the scientific community<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Rib\u00f3 explains: \u201cPrevious Cherenkov telescopes have been used within the framework of large international collaborations that operated in a relatively closed manner with respect to the wider scientific community. The large number of scientific cases that CTAO will enable, as well as the major financial investment required, have led CTAO to be conceived as an observatory open to the international scientific community. While some observations of strategic scientific targets will be carried out by the CTAO Consortium, there will also be numerous projects led by independent teams that will likely address scientific questions not previously explored.\u201d <\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text module_class=&#8221;section-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; header_2_font_size_tablet=&#8221;23px&#8221; header_2_font_size_phone=&#8221;23px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Technological development: electronics and trigger system<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">David Gasc\u00f3n, director of the <\/span><a href=\"https:\/\/www.ieec.cat\/en\/project\/35\/technological-unit\/\"><span style=\"font-weight: 400;\">Technology Unit at ICCUB<\/span><\/a><span style=\"font-weight: 400;\"> and member of the IEEC, has worked in the engineering area of the LST since 2008. His work, along with that of his team, has focused on designing specific components for the telescope cameras, including three integrated circuits developed to measure high-speed photon signals.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In collaboration with other Spanish institutions, the team participated in developing the trigger system. This electronic system operates in real time, analysing millions of images per second to filter out background noise or spurious information (such as ambient light or light from other stars) and search for patterns corresponding to gamma rays. As Gasc\u00f3n explains, these electronics are <strong>what allow signals of interest to be isolated and identified in fractions of a nanosecond<\/strong>.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text module_class=&#8221;section-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; header_2_font_size_tablet=&#8221;23px&#8221; header_2_font_size_phone=&#8221;23px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Scientific objectives: the study of transient events<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; link_font=&#8221;|700|||on||||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">Researcher Po<\/span><span style=\"font-weight: 400;\">l Bordas (ICCUB-IEEC) who has co-led the scientific programme of LST-1 over the last two years, explains how these telescopes operate. Bordas describes how the LSTs use the Earth&#8217;s atmosphere a<\/span><span style=\"font-weight: 400;\">s part of the detector: when high-energy photons hit the atmosphere, they generate particle cascades that produce Cherenkov light\u2014a very fast, bluish light captured by telescopes on the ground.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The LSTs, equipped with <\/span><b>23-metre-diameter mirrors<\/b><span style=\"font-weight: 400;\">, are designed to capture these emissions at the Observatory&#8217;s lowest energy range. This capability will be dedicated to studying transient phenomena, defined as fast and not necessarily periodic events. Among the study targets mentioned by the researcher are: <\/span><span style=\"font-weight: 400;\">gamma-ray bursts (GRBs), fast radio bursts (FRBs), an<\/span><span style=\"font-weight: 400;\">d the potential electromagnetic gamma-ray counterpart associated with gravitational waves.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u201cThe future operational start of the LSTs as part of the CTAO will serve both to confirm current physical predictions and to potentially detect new astrophysical events undocumented to date,\u201d Bordas concludes.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;30px||||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_divider color=&#8221;#406fda&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text admin_label=&#8221;M\u00e9s informaci\u00f3&#8221; module_class=&#8221;ieec-sub-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Cairo|700|||||||&#8221; text_text_color=&#8221;#406fda&#8221; text_font_size=&#8221;20px&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>About the CTAO<\/p>\n<p>[\/et_pb_text][et_pb_text module_class=&#8221;ieec-sub-text&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;16px&#8221; text_line_height=&#8221;1.1em&#8221; link_font=&#8221;|700|||on||||&#8221; custom_margin=&#8221;20px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">The CTAO (<\/span><a href=\"https:\/\/www.ctao.org\/\"><span style=\"font-weight: 400;\">Cherenkov Telescope Array Observatory<\/span><\/a><span style=\"font-weight: 400;\">) will be the world&#8217;s largest and most powerful gamma-ray astronomy observatory. The CTAO&#8217;s unprecedented precision and wide energy range (20 GeV \u2013 300 TeV) will help answer some of the most exciting questions in astrophysics, divided into three broad thematic areas: understanding the origin and role of relativistic cosmic particles; probing extreme environments, such as black holes and neutron stars; and exploring the frontiers of physics in search of dark matter or deviations from Einstein&#8217;s theory of relativity. Furthermore, the CTAO will play a key role in multi-messenger and multi-wavelength astronomy in the coming decades thanks to its enhanced performance, providing crucial insights into gamma rays in the most extreme scenarios.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To cover its broad energy range, the CTAO will use three types of telescopes: Large-Sized Telescopes (LSTs), Medium-Sized Telescopes (MSTs), and Small-Sized Telescopes (SSTs). More than 60 telescopes will be distributed between two sites (array sites): CTAO-North, in the Northern Hemisphere, located at the Observatorio del Roque de los Muchachos of the Instituto de Astrof\u00edsica de Canarias (IAC) in La Palma (Spain); and CTAO-South, in the Southern Hemisphere, at the Paranal Observatory of the European Southern Observatory (ESO) in the Atacama Desert (Chile). The CTAO Headquarters is hosted by the Istituto Nazionale di Astrofisica (INAF) in Bologna (Italy), and the Science Data Management Centre (SDMC) is based on the campus of the Deutsches Elektronen-Synchrotron (DESY) in Zeuthen (Germany).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The CTAO is a Big Data project. The Observatory will generate hundreds of petabytes (PB) of data per year (approximately 12 PB after compression). Committed to Open Science, the CTAO will be the first ground-based gamma-ray observatory to operate as an open, proposal-driven observatory, providing public access to its high-level science data and software products.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The CTAO Central Organisation (legally, CTAO ERIC) is responsible for the construction and operation of the Observatory. It manages the four CTAO sites: the Headquarters in Bologna (Italy), the SDMC in Zeuthen (Germany), and the two telescope arrays in La Palma (Spain) and the Atacama Desert (Chile).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The Central Organisation works in close cooperation with partner groups around the world to develop the Observatory. Key partners include the In-Kind Contribution (IKC) Collaborations, which are developing essential hardware and software, as well as the CTAO Consortium, an international group of researchers working on the scientific exploitation of the Observatory. Among the IKCs is the CTAO LST Collaboration, responsible for developing the LSTs.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The members of CTAO ERIC are Austria, Croatia, the Czech Republic, France, Germany, Italy, Poland, Slovenia, Spain, Switzerland, and the European Southern Observatory (ESO). The Netherlands is also part of CTAO ERIC as an Observer. Other countries\u2014Australia, Brazil, Japan, South Africa, and the USA\u2014are involved in the process of joining CTAO ERIC as Strategic Partners or Third Parties.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;1px|auto||auto|false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;M\u00e9s informaci\u00f3&#8221; module_class=&#8221;ieec-sub-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Cairo|700|||||||&#8221; text_text_color=&#8221;#406fda&#8221; text_font_size=&#8221;20px&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>About the LSTs<\/p>\n<p>[\/et_pb_text][et_pb_text module_class=&#8221;ieec-sub-text&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;16px&#8221; text_line_height=&#8221;1.1em&#8221; link_font=&#8221;|700|||on||||&#8221; custom_margin=&#8221;20px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span style=\"font-weight: 400;\">The Large-Sized Telescopes (LSTs) are one of three telescope types that the CTAO will use to cover its broad energy range, from 20 GeV to 300 TeV. When gamma rays interact with the Earth&#8217;s atmosphere, they generate particle cascades that produce Cherenkov light. Because lower-energy gamma rays create very small amounts of Cherenkov light, telescopes with large light-collection areas are required to detect it. The LST, with its 23-metre-diameter reflector, will provide the CTAO&#8217;s unique sensitivity in the low-energy range (between 20 and 150 GeV).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Despite standing 45 metres tall and weighing 100 tonnes, each LST can reposition to point at any target in the sky in under 20 seconds. Both this rapid repositioning and the low energy threshold of the LSTs are critical for CTAO&#8217;s studies of galactic transients, high-redshift active galactic nuclei, and gamma-ray bursts.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The CTAO LST Collaboration is responsible for designing and building these telescopes. It consists of over 500 scientists and engineers from 25 institutions across 11 countries: Brazil, Bulgaria, Croatia, the Czech Republic, France, Germany, Italy, Japan, Poland, Spain, and Switzerland.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The LST Collaboration is advancing rapidly at the CTAO-North site in La Palma, Spain. In 2018, the LST prototype, LST-1, was inaugurated and has been undergoing commissioning since. On 15 October 2026, the four-LST array will be inaugurated in La Palma by the LST Collaboration, bringing construction of these telescopes at CTAO-North to a close.<\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_divider color=&#8221;#406fda&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text admin_label=&#8221;Enlla\u00e7os&#8221; module_class=&#8221;ieec-sub-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Cairo|700|||||||&#8221; text_text_color=&#8221;#406fda&#8221; text_font_size=&#8221;20px&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Links<\/p>\n<p>[\/et_pb_text][et_pb_text module_class=&#8221;ieec-sub-text&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;16px&#8221; text_line_height=&#8221;1.1em&#8221; link_font=&#8221;|700|||on|||#1a1140|&#8221; link_text_color=&#8221;#1a1140&#8243; link_line_height=&#8221;1.4em&#8221; custom_margin=&#8221;20px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<ul>\n<li><a href=\"http:\/\/www.ieec.cat\/en\/\"><span style=\"font-weight: 400;\">IEEC<\/span><\/a><\/li>\n<li><a href=\"https:\/\/icc.ub.edu\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">ICCUB<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.ieec.cat\/projecte\/26\/cta\/\"><span style=\"font-weight: 400;\">Cherenkov Telescope Array Observatory<\/span><\/a><\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_divider color=&#8221;#406fda&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text admin_label=&#8221;Contactes&#8221; module_class=&#8221;ieec-sub-title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Cairo|700|||||||&#8221; text_text_color=&#8221;#406fda&#8221; text_font_size=&#8221;20px&#8221; custom_margin=&#8221;||10px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Contacts<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;2_5,3_5&#8243; admin_label=&#8221;Row&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;0px||||false|false&#8221; custom_padding=&#8221;0px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;2_5&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;|||20px|false|false&#8221; border_width_left=&#8221;1px&#8221; border_color_left=&#8221;#406fda&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;16px&#8221; text_line_height=&#8221;1.1em&#8221; link_font=&#8221;|700|||on|||#1a1140|&#8221; link_text_color=&#8221;#1a1140&#8243; link_line_height=&#8221;1.4em&#8221; header_4_font=&#8221;|700|||||||&#8221; header_4_text_color=&#8221;#1a1140&#8243; custom_margin=&#8221;||||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h4>IEEC Communication Office<\/h4>\n<p>Castelldefels, Barcelona<br \/>E-mail: <a href=\"mailto:comunicacio@ieec.cat\">comunicacio@ieec.cat<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;3_5&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;|||20px|false|false&#8221; border_width_left=&#8221;1px&#8221; border_color_left=&#8221;#406fda&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;16px&#8221; text_line_height=&#8221;1em&#8221; link_font=&#8221;|700|||on||||&#8221; link_text_color=&#8221;#1a1140&#8243; header_4_font=&#8221;|700|||||||&#8221; header_4_text_color=&#8221;#1a1140&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h4>Lead Researcher at the IEEC<\/h4>\n<h4>Marc Rib\u00f3<\/h4>\n<p>Institute of Space Studies of Catalonia (IEEC)<br \/>Institute of Cosmos Sciences (ICCUB)<br \/>E-mail: <a href=\"mailto:mribo@ieec.cat,\">mribo@ieec.cat,<\/a> <a href=\"mailto:mribo@icc.ub.edu\">mribo@icc.ub.edu<\/a><\/p>\n<h4>Pol Bordas<\/h4>\n<p>Institute of Space Studies of Catalonia (IEEC)<br \/>Institute of Cosmos Sciences (ICCUB)<br \/>E-mail: <a href=\"mailto:pbordas@ieec.cat,\">pbordas@ieec.cat,<\/a> <a href=\"mailto:pbordas@icc.ub.edu\">pbordas@icc.ub.edu<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row module_id=&#8221;ieec-about&#8221; module_class=&#8221;about-ieec&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;rgba(64,111,218,0.15)&#8221; global_module=&#8221;17324&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;20px|50px|20px|50px|true|true&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;Sobre l&#8217;IEEC&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; custom_margin=&#8221;||10px||false|false&#8221; header_2_font_size_tablet=&#8221;23px&#8221; header_2_font_size_phone=&#8221;23px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>About the IEEC<\/h2>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Text&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;||on||||||&#8221; link_font=&#8221;|700|||on||||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>The Institute of Space Studies of Catalonia (IEEC \u2014 Institut d\u2019Estudis Espacials de Catalunya) promotes and coordinates space research and technology development in Catalonia for the benefit of society. IEEC fosters collaborations both locally and worldwide and is an efficient agent of knowledge, innovation and technology transfer. As a result of 30 years of high-quality research, done in collaboration with major international organisations, IEEC ranks among the best international research centres, focusing on areas such as: astrophysics, cosmology, planetary science, and Earth Observation. IEEC\u2019s engineering division develops instrumentation for ground- and space-based projects, and has extensive experience in working with private or public organisations from the aerospace and other innovation sectors.<\/p>\n<p>The IEEC is a non-profit public sector foundation that was established in February 1996. It has a Board of Trustees composed of the Generalitat de Catalunya, Universitat de Barcelona (UB), Universitat Aut\u00f2noma de Barcelona (UAB), Universitat Polit\u00e8cnica de Catalunya \u00b7 BarcelonaTech (UPC), and the Spanish Research Council (CSIC). The IEEC is also a CERCA centre.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The LST (Large-Sized Telescopes) Collaboration of the Cherenkov Telescope Array Observatory (CTAO) reaches a new milestone at these facilities to boost very high-energy gamma-ray astronomy.<\/p>\n","protected":false},"author":5,"featured_media":48582,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"2880","footnotes":""},"categories":[110,74,98,106],"tags":[],"class_list":["post-48581","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-highlighted-news-big","category-news","category-science","category-technology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>One month to the inauguration of the four Large-Sized Telescopes at the CTAO observatory in La Palma - 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