National Large Solar Telescope

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National Large Solar Telescope
Location(s) Ladakh Edit this on Wikidata,
Telescope style solar telescope, Gregorian telescope Edit this on Wikidata

The National Large Solar Telescope (NLST) is a Gregorian multi-purpose open telescope[1] proposed to be built in Merak village in Ladakh in India and aims to study the sun's microscopic structure.[2]

The Indian Institute of Astrophysics is the nodal agency charged with various scientific bodies like the Indian Space Research Organisation (ISRO), Aryabhatta Research Institute of Observational-Sciences, Tata Institute of Fundamental Research (TIFR) and Inter-University Centre for Astronomy and Astrophysics (IUCAA) also participating.[3]


The proposed site for the location of the telescope is Merak Village in the Ladakh region of Jammu and Kashmir in India. The village is near Pangong Lake.[3]


NLST is proposed to be on-axis alt-azimuth Gregorian multi-purpose open telescope with the provision of carrying out night time stellar observations using a spectrograph.[1] It hopes to resolve features on the Sun of the size of about 0.1 arcsec. The focal plane instruments are to include a high resolution polarimeteric package to measure polarization with an accuracy of 0.01 per cent; a high spectral resolution spectrograph to obtain spectra in 5 widely separated absorption lines simultaneously and high spatial resolution narrow band imagers in various lines.[4]

See also[edit]


  1. ^ a b Hasan, S. S. The Indian National Large Solar Telescope Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 264, p. 499-504
  2. ^ "India To Build World's Largest Solar Telescope". Retrieved 2010-12-23. 
  3. ^ a b September 2nd, 2010 IANS (2010-09-02). "India to build world's largest solar telescope | Deccan Chronicle | 2010-09-02". Deccan Chronicle. Retrieved 2010-12-23. 
  4. ^ Singh, J. Proposed National Solar Telescope Journal of Astrophysics & Astronomy, Vol. 29, No. 1 - 2, pp. 345 - 351