In a big push for Atmanirbhar Bharat, scientists from the Aryabhatta Research Institute of observational sciences in Nainital, have designed and developed a low-cost optical spectrograph named Aries-Devasthal Faint Object Spectrograph & Camera. The spectograph is capable of locating sources of faint light from distant quasars and galaxies in a very young universe. It cost 2.5 times less than imported telescopes and can spot sources of light with a photon-rate as low as about 1 photon per second.