Override report form

IAC-CAT Telescopes time request form

Since November 2025, observation proposals for IAC Internal Time (IACInternal), Director’s Discretionary Time (DDT) and Spanish Service Time (Service) must be submitted using the new Telescope Time Proposal Application for the Canary Islands Observatories. This application unifies all Spanish OCAN observation proposals and requires users to register and validate their email address. OCAN proposals […]

CAT DDT request form (WHT, INT, NOT, TNG)

The Director Discretionary Time (DDT-IAC) has special characteristics and it is different to other observing time. Applicants should read the conditions carefully before submitting their proposal. The use of English is recommended.

CAT DDT request form (GTC)

See the rules to apply for Director’s Discretionary Time at the GTC. The use of English is recommended.

Service time request form

This form is valid ONLY for INT, NOT, TCS and the TNG service time proposals. INT, NOT, TCS and TNG service time proposals are evaluated but the Spanish Night CAT. The observing projects should be prepared following the rules and conditions explained here. Note that for the INT, NOT, TCS and TNG, the number of […]