3.6m Devasthal Optical Telescope

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3.6m Devasthal Optical Telescope
AltitudeP2044
WavelengthP3738–P3737
DiameterP2386
Secondary diameterP2386
Tertiary diameterP2386
Illuminated diameterP2386
LengthP2043
WidthP2049
MassP2067
Collecting areaP2046
Illuminated areaP2046
Focal lengthP2151

The 3.6m Devasthal Optical Telescope is a clear-aperture Ritchey–Chrétien telescope built by Aryabhatta Research Institute of Observational Sciences (ARIES) and is located at the Devasthal Observatory site near Nainital, Uttarakhand, India. ARIES operates another 1.3m telescope at the same location. The telescope was activated remotely on 31 March 2016 by Indian Prime Minister Narendra Modi and Belgian Prime Minister Charles Michel from Brussels. The telescope optics has been built in collaboration with the Belgian firm Advanced Mechanical and Optical System (AMOS).

The 3.6m DOT is currently the largest reflecting telescope in Asia.[1] The telescope intends to fill a large longitudinal gap in the 4m class of telescopes in the Asia region. The telescope features an optical spectrograph, a CCD imager and a near-infrared spectrograph. The telescope is also the first of its kind in India that features an active optics[2] system, featuring a wavefront sensor and pneumatic actuators which compensates for small distortions in the shape of the 4.3 tonne mirror due to gravity or atmospheric aberrations.

See also[edit]

References[edit]

  1. ↑ "'Remote Technical Activation' of the 3.6m Devasthal Optical Telescope at Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital". Press Information Bureau, Government of India.
  2. ↑ Sagar, Ram (2012). "New optical telescope projects at Devasthal Observatory". In Stepp, Larry M; Gilmozzi, Roberto; Hall, Helen J (eds.). Ground-based and Airborne Telescopes IV. Proceedings of the SPIE. Vol. 8444. pp. 84441T. arXiv:1304.2474. Bibcode:2012SPIE.8444E..1TS. doi:10.1117/12.925634. S2CID 119272065.

External links[edit]


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