HST Proposal Opportunities and Science Policies
Articles in this section comprise the traditional Call for Proposals. These articles include information on observing and science policies, and details on the proposal submission process, including roadmaps. It also includes the Primer, with information about the current HST performance and instruments, and the HST peer review process and details.
Active Call for Proposals
The current call for HST proposals (Cycle 34)
- The next deadline for the HST proposal submission is Thursday, April 16, 2026 at 8:00pm EDT.
The current call for HST Director's Discretionary (DD) time proposals
- The call for HST DD proposals is always open.
HST Policy and Proposal Information
Hubble Space Telescope Call for Proposals for Cycle 34
The Hubble Space Telescope Primer for Cycle 34
HST Cycle 33 Director's Discretionary Time Submission