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: 2020.2

Released: March 10, 2020

This upgrade is required for JWST Cycle 1 Proposers. Read more

This upgrade is not needed for HST Cycle 28 Proposers.

Previous Release Information

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.