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COO Telescope Time Solicitations
Here you'll find material on proposing for Keck and Palomar observing time through COO.
Current Solicitation: Semester 2026B
- Semester 2026B Call for Proposals and instructions.
Closed Solicitations (provided for reference):
2026A 2025B 2025A 2024B 2024A 2023B
Proposal Eligibility
COO Proposal Eligibility (information on COO proposal eligibility for Caltech Palomar & Keck time)
P200 Large Projects
Merging PDF Files
The Pilina and Kōkua (PK) Initiative
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COO Solicitations Index Page / v02Mar2026
Last updated: 02 March 2026 ACM/AFB/RJB