Fine Guidance Sensor (disambiguation)

Fine Guidance Sensor may refer to:

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  Fine Guidance Sensor (FGS) — Hubble Space Telescope

  A set of instruments on the Hubble Space Telescope used for high-precision pointing and guidance.

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  Fine Guidance Sensor (FGS) — NASA/ESA astrometry and attitude control systems

  A generic designation used for fine guidance sensors in spacecraft guidance and control/pointing architectures (often astrometric), employed in multiple mission instruments and designs.