Devasthal Optical Telescope

Devasthal Optical Telescope is a 3.6 m optical telescope in Nainital in Uttarakhand. It is the largest of its kind (reflecting telescope) in Asia. It was built by ARIES (Aryabhatta Research Institute of observational sciences) which is an autonomous institute under the department of science and technology. It has been operating since 2016. It is the first telescope in India with an active optics system. Recently, the indigenously developed ADFOSC was commissioned on the Devasthal Telescope.