National Large Solar Telescope (NLST)

Category: Science and Technology — Astronomy

The National Large Solar Telescope is a proposed ground-based solar-observation facility developed under the scientific planning of the Indian Institute of Astrophysics.

Key facts

  • Institution: Indian Institute of Astrophysics (IIA).

  • Design: A 2-metre-class optical and near-infrared telescope.

  • Proposed location: Merak, Ladakh, near Pangong Lake, at an altitude of approximately 4,200 metres.

  • It is designed to study the Sun's magnetic fields, solar atmosphere and dynamic solar phenomena.

  • High altitude, relatively transparent skies and suitable atmospheric conditions make the proposed site attractive for solar observations.

Scientific significance

  • Solar magnetic fields are closely associated with sunspots, solar flares and coronal mass ejections.

  • Better observations of solar activity can improve understanding of space weather.

  • Space weather can affect satellites, radio communications, navigation systems and power infrastructure.

UPSC key pointers

  • NLST is a ground-based solar telescope, not a space telescope.

  • The Indian Institute of Astrophysics is associated with its development.

  • Its proposed location is in Ladakh.

  • Do not confuse NLST with Aditya-L1, India's space-based solar observatory.