Indian Astronomical Observatory, Hanle


IAO Weather and Sky Condition (Live)

HCT Schedule: 2021 Cycle3 (1 September - 31 December)

HCT Accepted Proposals List: 2021 Cycle-3 (2021 September - December)

2m HCT Call for Proposals

Information for Guest Observers

Guidelines for HCT time allocation and Data Policy

Important Notice For All Observers

  • The Observatory is currently functioning with best efforts. The situation is evaluated periodically to ensure that the health of the observing staff is not affected and, if the situation warrants, may suspend operations.
  • All observations are being carried out in service mode. However, observers from IIA, Bengaluru can choose to be present for their observations at CREST, subject to strict adherence of IIA's COVID-19 norms and guidelines.
  • The HFOSC CCD1 system is in use since CCD2 system needs maintenance.
  • The HESP instrument will not be available until further notice due to a problem with the CCD controller.
  • Please use the HCT online proposal management system for submission of proposals.

  • To ensure the safety of components, the telescope will not be operated when the ambient temperature is below -20 deg C. The dome shall also be closed at this temperature limit.


    Indian Astronomical Observatory
    Indian Institute of Astrophysics
    Post Box No. 100, Leh-Ladakh 194 101 INDIA
    Tel : 91 (01982) 252195, 253104

    Last updated on: September 8, 2021