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Indigenously Developed Spectrograph Commissioned on Devasthal Optical Telescope
05/03/2021
The 3.6 m Ritchey Chretien Telescope at Devasthal, India. Photo: Ajay Talwar/Wikimedia Commons
New Delhi: Indian scientists have indigenously designed and developed a low cost optical spectrograph that can locate sources of faint light from distant quasars and galaxies in a very young universe, regions around supermassive black holes around the galaxies, and cosmic explosions, the Department of Science and Technology said on Wednesday.
Such spectroscopes were so far imported from abroad involving high costs.
The optical spectrograph named as Aries-Devasthal Faint Object Spectrograph & Camera (ADFOSC), indigenously designed and developed by Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, is about 2.5 times less costlier compared to the imported ones and can locate sources of light with a photon rate as low as about 1 photon per second ....

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