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Hubble Space Telescope
FGS Document Archive

Instrument Handbook The Instrument Handbook is the primary guide to the characteristics and use of the FGS. It is also available in PDF format (2.04 MB).
Data Handbook The Data Handbook is the primary guide to the calibration and analysis of FGS data.
Instrument Science Reports ISRs are technical reports written by the FGS Group staff about various aspects of the instrument and it's data. They usually contain in depth information about a specific topic.
Papers FGS related papers.