RAFTER: Ring Astrometric Field Telescope for Exo-planets and Relativity

@inproceedings{Riva2020RAFTERRA,
  title={RAFTER: Ring Astrometric Field Telescope for Exo-planets and Relativity},
  author={Alberto Riva and Mario Gai and Alberto Vecchiato and Deborah Busonero and Mario Gilberto Lattanzi and Federico Landini and Zhao-xiang Qi and Zheng-hong Tang},
  booktitle={Astronomical Telescopes + Instrumentation},
  year={2020}
}
High precision astrometry aims at source position determination to a very small fraction of the diffraction image size, in high SNR regime. One of the key limitations to such goal is the optical response variation of the telescope over a sizeable FOV, required to ensure that bright reference objects to any selected target. The issue translates into severe calibration constraints, and/or the need for complex telescope and focal plane metrology. We propose an innovative system approach derived… Expand
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The objectives include critical analysis of the Gaia methodology and performance, as well as principle demonstration experiments aimed at future innovative astrometric applications requiring high precision over large angular separations (one to 180 degrees). Expand
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