{"id":87361,"date":"2026-02-12T11:24:49","date_gmt":"2026-02-12T05:54:49","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=87361"},"modified":"2026-02-12T11:24:49","modified_gmt":"2026-02-12T05:54:49","slug":"ladakh-telescope-expansion","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/ladakh-telescope-expansion\/","title":{"rendered":"Ladakh Telescope Expansion: A New Era for Indian Astronomy"},"content":{"rendered":"<h2><b>Ladakh Telescope Expansion Latest News<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Union Budget has approved the establishment of <\/span><b>two new telescopes in Ladakh<\/b><span style=\"font-weight: 400;\">\u2014one to study the Sun and another to explore the origins of the universe\u2014alongside the upgradation of an existing telescope.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ladakh, already a key astronomy hub, hosts multiple observatories and includes <\/span><b>Hanle<\/b><span style=\"font-weight: 400;\">, India\u2019s first <\/span><b>Dark Sky Reserve<\/b><span style=\"font-weight: 400;\">, designated to preserve optimal night-sky conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The move is expected to significantly strengthen India\u2019s observational astronomy capabilities, positioning the country\u2014and the Global South\u2014more prominently in cutting-edge space research and deep-sky exploration.<\/span><\/li>\n<\/ul>\n<h2><b>National Large Solar Telescope (NLST): India\u2019s Next Solar Observatory<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The NLST is a 2-metre aperture solar telescope planned in the Merak region near Pangong Tso in Ladakh.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It will operate in the visible and near-infrared wavelengths, allowing detailed observation of solar activity from the ground.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Since different parts of the electromagnetic spectrum behave differently and not all radiation penetrates Earth\u2019s atmosphere, telescopes must be carefully designed based on their observational goals.<\/span><\/li>\n<\/ul>\n<h3><b>Scientific Objectives<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The NLST will enable scientists to study:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Solar dynamics and magnetism<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Energetic solar events such as flares and eruptions<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Space weather processes affecting Earth<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These studies are crucial for protecting satellites, communication systems, and space missions, as solar disturbances can disrupt national space assets.<\/span><\/li>\n<\/ul>\n<h3><b>Strengthening India\u2019s Solar Research Network<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Once operational\u2014expected within 5\u20136 years\u2014NLST will become India\u2019s third ground-based solar observatory, joining:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Kodaikanal Solar Observatory<\/b><span style=\"font-weight: 400;\"> (Tamil Nadu, established 1899)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Udaipur Solar Observatory<\/b><span style=\"font-weight: 400;\"> (Rajasthan, established 1975)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It will complement Indian Space Research Organisation (ISRO)\u2019s space-based solar mission, Aditya-L1, launched in 2023.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Together with Aditya-L1, the NLST will enhance India\u2019s capabilities in <\/span><b>heliophysics<\/b><span style=\"font-weight: 400;\">, reinforcing its position as a significant contributor to global solar research and space-weather forecasting.<\/span><\/li>\n<\/ul>\n<h2><b>National Large Optical\u2013Near Infrared Telescope (NLOT): India\u2019s Giant Eye on the Cosmos<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The NLOT will be a 13.7-metre aperture <\/span><b>segmented-mirror telescope<\/b><span style=\"font-weight: 400;\"> built in Hanle, Ladakh.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Its primary mirror will consist of 90 hexagonal segments, functioning together as a single, <\/span><span style=\"font-weight: 400;\">large mirror to collect faint cosmic light with high precision<\/span><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Projected to be completed within the next decade, NLOT will rank among the world\u2019s largest optical\u2013infrared telescopes.<\/span><\/li>\n<\/ul>\n<h3><b>Why Ladakh Is Ideal<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ladakh\u2019s high altitude, cold and dry climate, and clear skies provide near-ideal observing conditions.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These reduce atmospheric distortion and diffraction, allowing sharper, more accurate astronomical observations compared to many global sites.<\/span><\/li>\n<\/ul>\n<h3><b>Scientific Objectives<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NLOT will enable frontier research in:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Exoplanet detection<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Stellar and galactic evolution<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Supernovae studies<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Investigating the origins of the universe<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Its optical\u2013infrared capability allows it to observe distant and faint cosmic objects, crucial for deep-space research.<\/span><\/li>\n<\/ul>\n<h3><b>Leveraging Experience from TMT<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India\u2019s participation in the Thirty Meter Telescope (TMT) project strengthens its technical capability. TMT\u2019s 30-metre mirror uses 494 hexagonal segments, and India plays a key role by:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Designing the Segment Support Assembly<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Supplying 80 hexagonal mirror segments<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This expertise in precision engineering and mirror alignment will ease the construction of NLOT\u2019s complex components.<\/span><\/li>\n<\/ul>\n<h2><b>Upgraded Himalayan Chandra Telescope: Strengthening India\u2019s Transient Astronomy<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Legacy of the Himalayan Chandra Telescope (HCT)<\/b><span style=\"font-weight: 400;\"> &#8211; The 2-metre Himalayan Chandra Telescope (HCT) was among the first major observatories established in Ladakh. Over 25 years, it has contributed valuable data, particularly in transient astronomy, studying short-lived cosmic events such as supernovae.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Major Upgrade: Enhanced Capabilities<\/b><span style=\"font-weight: 400;\"> &#8211; The approved upgrade will transform HCT into a 3.7-metre segmented-mirror telescope, operating in the optical\u2013infrared wavelengths. This enhancement will significantly improve its sensitivity and observational power.<\/span><\/li>\n<\/ul>\n<h3><b>Complementing Global Scientific Facilities<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The upgraded HCT will work in synergy with major international projects such as:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>LIGO-India<\/b><span style=\"font-weight: 400;\">, an Indo-US gravitational-wave observatory coming up in Hingoli, Maharashtra<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Square Kilometre Array<\/b><span style=\"font-weight: 400;\">, the world\u2019s largest radio telescope project, based in Australia and South Africa<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">By coordinating with these facilities, HCT will help identify and study cosmic events detected through gravitational waves and radio signals.<\/span><\/li>\n<\/ul>\n<h2><b>Why the New Telescopes Are Game-Changers for Indian Astronomy<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Unique Geographic Advantage<\/b><span style=\"font-weight: 400;\"> &#8211; Both the NLST and the NLOT will be unique in their respective wavelengths at this longitude and region. Their location in Ladakh offers observational windows not fully covered by existing global facilities.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Unprecedented Scientific Data<\/b><span style=\"font-weight: 400;\"> &#8211; The telescopes are expected to generate new, high-quality data that was previously unavailable, strengthening India\u2019s contribution to solar physics, deep-space studies, and cosmology.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Greater Access to Observation Time<\/b><span style=\"font-weight: 400;\"> &#8211; Unlike many international telescopes where observation time is limited and prioritised for partner countries, these facilities will provide Indian scientists with assured and preferential access, boosting domestic research output.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Global Impact<\/b><span style=\"font-weight: 400;\"> &#8211; Together, NLST and NLOT are poised to be transformational projects, enhancing India\u2019s standing in global astronomy while contributing critical insights to the international scientific community.<\/span><\/li>\n<\/ul>\n<p><b>Source:<\/b><strong> <a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-sci-tech\/india-ladakh-telescopes-astronomy-union-budget-10524715\/\" target=\"_blank\" rel=\"nofollow noopener\">IE<\/a> | <a href=\"https:\/\/indianexpress.com\/article\/india\/union-budget-2026-centre-to-set-up-2-large-telescopes-upgrade-an-existing-one-in-ladakh-10507931\/\" target=\"_blank\" rel=\"nofollow noopener\">IE<\/a> | <a href=\"https:\/\/www.ndtv.com\/india-news\/union-budget-2026-puts-telescopes-at-heart-of-indias-science-vision-10925800\" target=\"_blank\" rel=\"nofollow noopener\">NDTV<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ladakh Telescope Expansion boosts Indian astronomy with NLST, NLOT, and upgraded HCT, strengthening solar, deep-space and multi-messenger research capabilities.<\/p>\n","protected":false},"author":18,"featured_media":87374,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[5341,60,22,59],"class_list":{"0":"post-87361","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-mains-current-affairs","8":"tag-ladakh-telescope-expansion","9":"tag-mains-articles","10":"tag-upsc-current-affairs","11":"tag-upsc-mains-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/87361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=87361"}],"version-history":[{"count":4,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/87361\/revisions"}],"predecessor-version":[{"id":87377,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/87361\/revisions\/87377"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/87374"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=87361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=87361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=87361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}