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: 2020.3.1

Patch released: June 23, 2020

APT 2020.3.1 patches minor fixes for HST and JWST. (Download required for HST/WFC3/UVIS proposals.)

The upgrade to APT 2020.3 is required for people working on JWST Cycle 1 Proposals. Read more

The upgrade to APT 2020.3 is not required for HST  proposal writing.

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.