HST Documents

STScI maintains these documents in support of HST proposal preparation, observations and data analysis.

Phase I Proposal Preparation

Instrument Handbooks

User Information Reports

Phase II Proposal Preparation

Observing Strategies

Data Reduction, Archive, etc.

Documents Archive

Cycle 16
Cycle 15

Hardcopies

If you wish to obtain a paper copy of any of our documents, please fill out our online form.