India is likely to start building the world's largest solar telescope essentially to study the atmosphere of the sun and make a better understanding of the sun spots.
At present, the world's largest solar telescope is the McMath-Pierce Solar Telescope in Kitt Peak National Observatory at Arizona in the US.
"Fabrication of the National Large Solar Telescope is likely to begin in late 2013," Siraj Hasan, principal investigator for the project, said on the sidelines of the 100th Indian Science Congress here.
The Rs 300-crore project is expected to come up at either Hanle or Merak, near Ladakh's Pangong lake along the Line of Actual Control with China.
The telescope, with an aperture size of two metres, will be completed by 2017.
Most back-end instruments of the telescope would be made in-house and the instrument for night time observations will be developed in collaboration with Hamburg Observatory in Germany.