{
  "abstract": "High-Dynamic-Range (HDR) multi-band linear polarimetry of the solar corona during total solar eclipses provides a vital ground-based diagnostic tool for mapping plasma morphology and magnetic topology in the inner and middle corona. Extracting reliable polarimetric signals requires rigorous observational calibration, spatial co-alignment, and noise reduction via stacking. We report optical linear polarimetric observations acquired during the 8 April 2024 total solar eclipse from Dallas, Texas, USA, near solar maximum. Using a full-frame color CMOS detector paired with an 80~mm refractor, multi-band Red, Green, and Blue (RGB) images were recorded simultaneously across three polarizer orientations ($-60^\\circ$, $0^\\circ$, and $+60^\\circ$) using a 9-step exposure bracket ($1/800\\text{~s}$ to $1/3\\text{~s}$). We present an end-to-end data-reduction pipeline incorporating: (i)~a novel astrometric registration framework that reconstructs Sun-centric solar-disk coordinates via lunar-limb fitting, catalog star plate-solving, and ephemeris displacement calculations, achieving sub-pixel alignment; (ii)~a photometrically linear exposure-normalization HDR image synthesis; and (iii)~Multi-scale Gaussian Normalization (MGN) coupled with Polarization-to-RGB chromatic mapping. The resulting structurally enhanced polarization composites unravel a complex solar-maximum coronal topology characterized by helmet streamers and fine-scale striations traceable out to $\\sim3\\,R_\\odot$. This framework establishes a high-resolution, photometrically calibrated dataset ready for subsequent polarized brightness ($pB$) and electron density inversions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.26231",
  "author_total": 5,
  "authors": [
    {
      "name": "Suprit Singh"
    },
    {
      "name": "Paras Sharma"
    },
    {
      "name": "Bharti Arora"
    },
    {
      "name": "Shivam Burman"
    },
    {
      "name": "Chaitanya Gandhi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f3ardmkj58g6k.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.26231",
  "fulltext_url": null,
  "id": "f3ardmkj58g6k",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.26231",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.IM"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.26231",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f3ardmkj58g6k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2610.26231",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.26231"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Linear Polarimetry of the Solar Corona during the Total Solar Eclipse of 8 April 2024: Multi-Band Observations and HDR Imaging",
  "title_text": "Linear Polarimetry of the Solar Corona during the Total Solar Eclipse of 8 April 2024: Multi-Band Observations and HDR Imaging",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/f3ardmkj58g6k",
  "venue": "arXiv",
  "versions": []
}