{
  "abstract": "Detecting Earth-like exoplanets requires micro-arcsecond astrometry, which relies on a precisely calibrated focal plane equipped with high-resolution detectors. Accurate calibration depends on characterizing detector imperfections and systematic effects. Optical benches have been developed to assess the sensor's behavior: an integrating-sphere setup for electro-optical parameters, an interferometric bench for pixel-level geometry, and a star-field projection system for intrinsic distortion. This work presents the characterization benches built for a 46-Megapixels (MP) imaging sensor, based on the same technology as the four 220-MP detectors foreseen for the final focal-plane, and the performance metrics obtained from these setups in the context of NASA's HWO and ESA's M-class missions. Upgrades will bring the test environment closer to operational conditions: a second 46-MP sensor will be added for multi-detector tests, plus an adjustable-angle fringeprojection system and improved alignment.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: SPIE Astronomical Telescopes + Instrumentation 2026, SPIE, Jul 2026, Copenhagen, Denmark",
  "arxiv": "2609.15682",
  "author_total": 10,
  "authors": [
    {
      "name": "Fabrice Pancher"
    },
    {
      "name": "Sebastien Soler"
    },
    {
      "name": "Fabien Malbet"
    },
    {
      "name": "Hugo Rousset"
    },
    {
      "name": "Manon Lizzana"
    },
    {
      "name": "Alain Leger"
    },
    {
      "name": "Thierry L{é}pine"
    },
    {
      "name": "Florence Ardellier-Desages"
    },
    {
      "name": "Jer{ô}me Amiaux"
    },
    {
      "name": "Pierre-Olivier Lagage"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e47m3f2618mcb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.15682",
  "fulltext_url": null,
  "id": "e47m3f2618mcb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.15682",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.IM"
    ],
    [
      "arxiv",
      "physics.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.15682",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e47m3f2618mcb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.15682",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.15682"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Setup and performance of focal-plane characterization benches for high precision astrometry",
  "title_text": "Setup and performance of focal-plane characterization benches for high precision astrometry",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/e47m3f2618mcb",
  "venue": "arXiv",
  "versions": []
}