Astronomer's Proposal Tool
The 22.4.1 version of Astronomer's Proposal Tool for Mac is available as a free download on our website. The unique identifier for this app's bundle is edu.stsci.APT. The application can also be called "APT", "Astronomers Proposal Tool".
The following version: 22.4 is the most frequently downloaded one by the program users. Astronomer's Proposal Tool can be installed on Mac OS X 10.7.3 or later. The actual developer of this free Mac application is Space Telescope Science Institute. Commonly, this application's installer has the following filename: aptinstaller.zip. The software lies within Productivity Tools, more precisely General.
From the developer:
The Astronomer's Proposal Tool (APT) is used to write, validate and submit proposals for the Hubble Space Telescope.
You may want to check out more Mac applications, such as Aperture Photometry Tool, Tools for Television PRO or Make My App - Mockup Tools for Developers, which might be related to Astronomer's Proposal Tool.