High-precision stellar parallaxes from Hubble Space Telescope fine guidance sensors

@article{Benedict2004HighprecisionSP,
  title={High-precision stellar parallaxes from Hubble Space Telescope fine guidance sensors},
  author={G. Benedict and B. Mcarthur},
  journal={Proceedings of the International Astronomical Union},
  year={2004},
  volume={2004},
  pages={333 - 346}
}
We describe our experiences with on-orbit calibration of, and scientific observations with, the Fine Guidance Sensors (FGS), white-light interferometers aboard Hubble Space Telescope. Our original goal, 1 milliarcsecond precision parallaxes, has been exceeded on average by a factor of three, despite a mechanically noisy on-orbit environment, the necessary self-calibration of the FGS, and significant temporal changes in our instruments. To obtain accurate absolute parallaxes from these small… Expand

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