Welcome to the IAC Time Allocation Commission proposal submission service. Please visit CAT for additional information and news about the proposal submission process and the time allocation of the Commission. Registration is required for proposal submission. Already have an account? Please log in to view and submit proposals.
Night time calls
2026A IAC internal time call
IAC-only time for telescopes : IAC80, OGS LCO, SARA and Open University
Director Discretionary Time
Director Discretionary Time for ORM telescopes
Spanish Service Time
Spanish Service time for TNG, NOT, TCS and IAC80 only. The PI of the IAC80 proposals must affiliated to the IAC.
Solar time calls
There are no solar time calls at this time.