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Observing Proposals

2025A Call for Proposals

The deadline has passed.

Proposal Application

Submit a proposal for Director’s discretionary time (2024B).

Anonymization Policy

Keeping the proposal review process fair.

Open Access Program

An opportunity for astronomers everywhere.

Extended Science Family

Former LCO grad students and posdocs, as well as LCO committee members, are eligible to submit proposals.

Science Collaboration

Institutions with guaranteed observing time on LCO or who are eligible to apply for LCO's share.