Call for Proposals
ESO invites proposals for observations at ESO telescopes during Period 118.
The deadline for Period 118 (1 May 2027 – 30 April 2028) is:
22 September 2026
(12:00 noon, Central European Summer Time)
The conditions and policies for proposing for observations are outlined and linked in the Period 118 Call for Proposals document.
- Proposals are submitted via the p1 proposal preparation tool.
- See the Late Breaking News for information that become available after the release of the Call for Proposals.
- Information for proposal preparation, technical information, foreseen changes can be found in the Useful links for Period 118 webpage.
- Please contact the ESO Science Operations Helpdesk for questions on the proposal preparation and submission.