India to Establish Two New Telescopes in Ladakh

In the Union Budget 2026–27, the Government of India approved a major expansion of ground-based astronomy infrastructure in Ladakh.

The programme includes the establishment of two new mega-telescopes and the upgradation of the existing Himalayan Chandra Telescope (HCT).

Major Telescope Projects

Telescope / Facility	Details
National Large Solar Telescope (NLST)	A high-resolution solar telescope near Pangong Tso Lake, Ladakh, designed to study the Sun’s surface and atmosphere. It will complement the Kodaikanal Solar Observatory, Udaipur Solar Observatory, and the Aditya-L1 mission.
National Large Optical–Near Infrared Telescope (NLOT)	A deep-space optical and near-infrared telescope intended for advanced cosmic research and astronomical observations.
Scientific Applications	Research areas include exoplanets, stellar and galactic evolution, cosmology, supernovae, and distant galaxies.
Himalayan Chandra Telescope Upgrade	The HCT will be upgraded with a 3.7-metre segmented primary mirror, improving sensitivity and extending wavelength coverage into optical-infrared regimes.
Scientific Impact	The upgraded HCT will enable deeper observations and complement both international observatories and the new Indian telescopes.

Why Ladakh is Ideal for Astronomy

High altitude and thin atmosphere improve astronomical visibility.
Dry climate and low atmospheric water vapour reduce signal distortion.
Dark skies with minimal light pollution support deep-space observations.
Cold desert conditions make Ladakh suitable for infrared astronomy.

PT Facts

Ladakh Advantage: High altitude, dry climate, low atmospheric water vapour, and dark skies make it ideal for astronomy.
Near-Infrared Telescopes: Useful for studying cool stars, dust-obscured regions, and distant galaxies.
Aditya-L1: India’s solar observatory studying the Sun from the L1 point in the Sun-Earth system.
Solar Telescopes: Help study sunspots, solar flares, coronal mass ejections, and space weather.

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