{
  "abstract": "This paper presents the development strategy for HWO-AGATE (Accurate Guiding and Astrometry Targeting Exoearths), a high-precision relative astrometry instrument concept designed for the future Habitable Worlds Observatory (HWO). The instrument is based on a gigapixel-class focal plane that incorporates the new generation of large-format GigaPyx CMOS sensors developed by Pyxalis. The proposed architecture relies on four 220-megapixel sensors assembled into a focal plane array and coupled with a dedicated calibration system to achieve the astrometric precision required for exoplanet detection and characterization. Preliminary study identified three major technological challenges. First, the performance of the 220-MP detectors must be validated against HWO's astrometric requirements. Second, the development of space-qualified packaging and integration solutions is required for a multi-sensor focal plane, while addressing the electrical and thermal constraints associated with the fast readout of large-format CMOS detectors. Third, an onboard calibration data-processing architecture must be implemented to reduce the raw data volume by approximately two orders of magnitude, enabling efficient operation within spacecraft resource limits. To address these challenges, we propose a comprehensive technology maturation program based on the construction of a representative end-to-end detection chain. The demonstration setup will include a partial focal plane equipped with 220-MP sensors, front-end electronics, a dedicated processing unit, and the calibration subsystem. The objective is to demonstrate compliance with HWO-AGATE requirements and to raise the maturity of large-format CMOS detector technology to Technology Readiness Level 5 (TRL 5). Detector validation and space-qualified packaging activities are already supported through institutional funding and the French national PEPR ORIGINS program in the RETINA (Researching Exoplanets Through Imaging for Narrow-angle Astrometry) project.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: SPIE 2026, Space Telescopes and Instrumentation 2026:, SPIE, Jul 2026, Copenhagen, Denmark",
  "arxiv": "2610.06188",
  "author_total": 15,
  "authors": [
    {
      "name": "Florence Ardellier-Desages"
    },
    {
      "name": "Jer{ô}me Amiaux"
    },
    {
      "name": "J{é}r{ô}me Bobin"
    },
    {
      "name": "St{é}phane Chevobbe"
    },
    {
      "name": "Eric Doumayrou"
    },
    {
      "name": "Pierre-Antoine Frugier"
    },
    {
      "name": "Pierre-Olivier Lagage"
    },
    {
      "name": "Manon Lizzana"
    },
    {
      "name": "Fabien Malbet"
    },
    {
      "name": "Jer{ô}me Martignac"
    },
    {
      "name": "Julien Michelot"
    },
    {
      "name": "Fabrice Pancher"
    },
    {
      "name": "Pichon Thibault"
    },
    {
      "name": "Samuel Ronayette"
    },
    {
      "name": "Hugo Rousset"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0507trvheybbq.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.06188",
  "fulltext_url": null,
  "id": "0507trvheybbq",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.06188",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.06188",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0507trvheybbq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.06188",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.06188"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    }
  ],
  "title": "Technological maturation of a Gigapixels Astrometry instrument for the Habitable World Observatory.",
  "title_text": "Technological maturation of a Gigapixels Astrometry instrument for the Habitable World Observatory.",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/0507trvheybbq",
  "venue": "arXiv",
  "versions": []
}