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: 2020.1.2

Released: February 18, 2020

This upgrade is suggested for HST Cycle 28 Proposers. Read more

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

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.