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: 2020.4.1

Released: October 1, 2020

(The APT 2020.4.1 is a patch that addresses a performance issue for NIRSpec MSA Planner only.)

The upgrade to APT 2020.4 is required for people working on JWST Cycle 1 Proposals. Read more

The upgrade to APT 2020.4 is not required for HST (but has a helpful Visit Planner help fix).

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.