Mysuru:  Mysuru is preparing to record a landmark achievement in the fields of astronomy, heritage science and traditional knowledge. South India’s first-ever Indian-style astronomical observatory — Vedhashale — modelled on the historic Jantar Mantar observatories of Jaipur, Ujjain and New Delhi, will be inaugurated at Bhartiyogadhama, Uttanahalli, tomorrow (Dec. 7) between    10 am and 1.30…