Instrument Handbooks

To learn about the instruments:

• ACS Instrument Handbook [PDF]– Advanced Camera for Surveys
• COS Instrument Handbook [PDF] – Cosmic Origins Spectrograph
• STIS Instrument Handbook [PDF] – Space Telescope Imaging Spectrograph
• WFC3 Instrument Handbook [PDF] – Wide Field Camera 3
• FGS Instrument Handbook [PDF] – Fine Guidance Sensor

Call for Proposals

To prepare your proposal:

• HST Proposal Opportunities and Science Policies, including the:
  • Hubble Space Telescope Call for Proposals for Cycle 31

Advice for Planning ACS Observations

Data Handbooks

To learn more about data from the instruments:

• Introduction to the HST Data Handbooks [PDF]
• ACS Data Handbook [PDF] – Advanced Camera for Surveys
• COS Data Handbook [PDF] – Cosmic Origins Spectrograph
• STIS Data Handbook [PDF] – Space Telescope Imaging Spectrograph
• WFC3 Data Handbook [PDF] – Wide Field Camera 3
• FGS Data Handbook [PDF] – Fine Guidance Sensor

Phase II Proposal Instructions

To prepare your Phase II submission for accepted proposals:

• HST Phase II Proposal Instructions Home [PDF]

DrizzlePac Handbook

To align, process, and combine your HST images:

• The DrizzlePac Handbook

Additional Documentation

• STScI Hubble Space Telescope webpage
• HST Documentation webpage
• HST Instrumentation webpage
• Community Software webpage for APT, ETC, and DrizzlePac
• HST Observer's Guide Brochure [PDF]

MAST: Mikulski Archive for Space Telescopes

• Archive homepage
• MAST portal
• MAST HST Search

HST Help Desk

If you have questions, please contact the Help Desk: 

• HST Help Desk web portal
  • Read Knowledge Base articles that address Frequently Asked Questions
  • Search all HDox pages and Knowledge Base articles for answers
  • Send your question directly to the appropriate team of experts
• help@stsci.edu
  • Questions may also still be submitted via e-mail