This page has all the documentation and tools necessary to develop, submit, and monitor your HST Phase II proposal.

Policies, guidelines and grant information

• To HST Observers: Preparing Your Phase II Program for Cycle 17
• Visit Size Recommendations
• Grant Information and Budget Forms
• Policies for the Telescope Time Review Board (TTRB): Repeating HST Observations, Changes to Accepted HST Programs, Resolution of Duplications, and Other Program Alterations

Writing and evaluating your Phase II proposal

• Astronomer's Proposal Tool
  The current version of the Astronomer's Proposal Tool software can be retrieved here. Please use this version of APT for developing and modifying your Phase II proposal.
• Phase II Proposal Instructions
  This is the primary reference for the syntax of a Phase II proposal.
• Steps for Creating Your Phase II Proposal
  This page gives an outline of the steps involved in creating a complete Phase II proposal.

Additional documentation for Phase II proposal preparation

• Instrument Handbooks and Reports
  The home pages for the individual scientific instruments ( ACS, COS, FGS, NICMOS, STIS, and WFC3) contain pointers to critical technical documentation such as the Instrument Handbooks and Instrument Science Reports.
• Fixed Target Coordinate Measurement
  The HST reference frame has been changed, starting with Cycle 15 observations. HST will now use the GSC II, which has been calibrated to be on the International Celestial Reference System. Target coordinates from GSC I can still be used if scientifically necessary. Click on the link above to access tools and instructions for retrieving your target coordinates from the HST Guide Star Catalog and/or measuring your target in the HST Guide Star Coordinate system. There is also a tool for converting GSC I coordinates into GSC II coordinates.
• HST Documents
  This page provides a list of documents that could be useful to the observer.

Information regarding the status of programs, change requests, and Hubble Observation Problem Reports (HOPRs)

• HST Program and Schedule Information
  Once your proposal has been submitted you can use this facility to monitor its progress through execution.
• Change Requests
• Hubble Observation Problem Reports

STScI Program Coordinator Team