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

Trouble installing APT? Please see Troubleshooting Tips at the bottom of each of these platform specific Installation instructions.

Current Release: 2024.1

APT 2024.1 was released on February 23, 2024 and is required for JWST work.

(HST users may continue to use APT 2023.7.3.)

Current and previous release summary

Documentation, Training, and Support