Aryabhatta Research Institute of Observational Sciences, who recently built an indigenous spectrograph, is located in which hillstation? By Mukesh Sharma - April 16, 2021 Amazon Daily Quiz, 16 April 2021. Options to the question – Aryabhatta Research Institute of Observational Sciences, who recently built an indigenous spectrograph, is located in which hillstation? Darjeeling Mount Abu Nainital Kodaikanal The correct answer is Nainital.