{
  "abstract": "Planetary microlensing analyses rely on $Δχ^2$ maps across the binary-lens separation $s$ and mass ratio $q$ to locate degenerate solutions and bound parameter uncertainties. Because every grid point requires a full light-curve optimization with finite-source magnifications, constructing these maps is often the primary computational bottleneck in event modeling. Here I present lenscape, an open-source Python package that accelerates $Δχ^2$ mapping and suppresses local-minimum artifacts through multi-stage neighbor propagation and adaptive contour refinement. Applied to the planetary event MOA-2022-BLG-091, lenscape reproduces the published $50\\times50$ map in 14 minutes and generates a $400\\times400$ map in under two hours on a desktop computer.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.38764",
  "author_total": 1,
  "authors": [
    {
      "name": "Michael Hippke"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6bnhkcqm7ggyt.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.38764",
  "fulltext_url": null,
  "id": "6bnhkcqm7ggyt",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.38764",
  "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.EP"
    ],
    [
      "arxiv",
      "astro-ph.IM"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.38764",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6bnhkcqm7ggyt.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.38764",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.38764"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    }
  ],
  "title": "lenscape: Fast, High-resolution $Δχ^2$ Maps of Microlensing Events",
  "title_text": "lenscape: Fast, High-resolution Δχ^2 Maps of Microlensing Events",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:45Z",
  "url": "https://research.draconitic.com/paper/6bnhkcqm7ggyt",
  "venue": "arXiv",
  "versions": []
}