What is APT?

The Astronomer's Proposal Tool (APT) is used to write, validate, and submit proposals for the Hubble Space Telescope and the James Webb Space Telescope.

Download and Installation Instructions

Current Release: 2020.5

Released: December 18, 2020

The upgrade to APT 2020.5 is required for people who will be submitting HST Cycle 29 Phase 1 Proposals.

Current and previous release summary

Documentation, Training, and Support

Documentation, Training, and Support

Links to user documentation, training materials, and APT support are provided in the sections below based on the type of proposal being submitted.