HST Phase II Support
Main Phase II Resources
17 June: Updated Information for Phase 2 Proposal Development
HST Cycle 17 Phase II instructions:
GO Version
Astronomer's Proposal Tool (APT) for Phase II preparations
WFC3 Instrument Handbook
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
Other Useful Links
Software Planning and Data Analysis Tools
Instrument Science Reports
Exposure Time Calculators
The HST Dither Handbook
MultiDrizzle