Main Phase II Resources

• HST Cycle 16 Phase II instructions:
  GO Version
  
• Astronomer's Proposal Tool (APT) for Phase II preparations
• GO Bright Object Protection Requirements April 2007
• ACS STANS with important information about Phase II preparations
  (e.g., subarrays, growth of hot pixels, dithers, etc)
  STAN released in Cycle 12
  STAN released in Cycle 13
  STAN released in Cycle 14
  STAN released in January 2006
  STAN released in July 2006
  STAN released in November 2006
  
• ACS Instrument Handbook
• ACS FAQ
• Duplication Checking
  To check for duplications among the observations that you wish to propose, please use the tools and links on the MAST Web Page. Use one of the following three options:
  HST Duplication Checking Web Form Starview Planned and Archived Exposures Catalog

APT Bright Object Tool

• WFC/HRC Information
• SBC Information

Other Useful Links

• ACS Presentation at the HST Calibration Workshop 2002
• Instrument Science Reports
• Exposure Time Calculators: Spectroscopic, Imaging, Ramp, Coronagraph, Coronagraph with Ramp
• The HST Dither Handbook
• MultiDrizzle
• Tiny Tim
• Getting Help