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Proceedings Paper

NLST: the Indian National Large Solar Telescope
Author(s): S. S. Hasan; D. Soltau; H. Kärcher; M. Süss; T. Berkefeld
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Paper Abstract

India is planning a new solar telescope with an aperture of 2-m for carrying out high resolution studies of the Sun. Site characterization is underway at high altitude locations in the Himalayan mountains. A detailed concept design for NLST (National Large Solar Telescope) has been completed. The optical design of the telescope is optimized for high optical throughput and uses a minimum number of optical elements. A high order AO system is integrated part of the design that works with a modest Fried's parameter of 7-cm to give diffraction limited performance. The telescope will be equipped with a suite of post-focus instruments including a high resolution spectrograph and a polarimeter. NLST will also be used for carrying out stellar observations during the night. The mechanical design of the telescope, building, and the innovative dome is optimized to take advantage of the natural air flush which will help to keep the open telescope in temperature equilibrium. After its completion (planned for 2014), NLST will fill a gap in longitude between the major solar facilities in USA and Europe, and it will be for years the largest solar telescope in the world

Paper Details

Date Published: 28 July 2010
PDF: 12 pages
Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77330I (28 July 2010); doi: 10.1117/12.856108
Show Author Affiliations
S. S. Hasan, Indian Institute of Astrophysics (India)
D. Soltau, Kiepenheuer-Institut für Sonnenphysik (Germany)
H. Kärcher, MT Mechatronics GmbH (Germany)
M. Süss, MT Mechatronics GmbH (Germany)
T. Berkefeld, Kiepenheuer-Institut für Sonnenphysik (Germany)

Published in SPIE Proceedings Vol. 7733:
Ground-based and Airborne Telescopes III
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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