... HST . ... HST Cycle 24 Scientific Justification Templates . ... If you are viewing this document from the browser in APT (The title bar will say "Astronomer's Proposal Tools Help") please go directly to the Science Templates webpage at http://www.stsci.edu/hst/proposing/docs/template in your normal web browser, as you will not be able to download these templates from the APT Java help browser. We have created these templates to aid a Phase I Proposer to generate their PDF Scientific Justification. ...