|HST Call for Proposals for Cycle 25|
• Write for the appropriate audience.
Review panels span a broad range of scientific expertise. It is therefore crucial that your proposal provides sufficient introductory material for the non-specialist, and explains the importance of the program to astronomy in general.
• Explain clearly and coherently what you want to do and why.
Make sure to get your point across to reviewers who have to judge on the order of 80 proposals in a few days.
• If you have a project that requires a significant investment of HST observing time, do not hesitate to propose it.
The classification system for GO Proposals (Small: 1-34 orbits; Medium: 35-74 orbits; Large: 75 orbits or above) is designed to ensure that proposals of all sizes are selected.
• Make sure that what you propose is feasible.
It is the responsibility of the proposer to ensure that the proposed observations are technically feasible. Proposals that are not technically feasible will be rejected, so familiarize yourself with the technical documentation provided by STScI. In particular, make sure that your observations do not exceed bright object safety limits Section 5.1 of the HST Primer). Contact the STScI Help Desk (see Section 1.6) if anything is not clear, or if you are unsure about the feasibility of a particular approach or observation.