{
  "abstract": "We present an updated flux calibration for all imaging modes of the Near Infrared Camera (NIRCam) on JWST that converts instrumental units to physical surface brightness units of MJy sr ⁻¹ . This calibration includes observations of 19 flux standard stars spanning 3.5 yr, with a mix of A dwarfs, solar analogs, and hot stars. All five coronagraphic setups, all 29 filters, and both weak lenses are calibrated. This is the first on-sky calibration for the weak lenses used in time-series observations and for secondary coronagraphic configurations (long-wavelength masks paired with short-wavelength filters, and vice versa). We also assess count-rate differences between subarrays and the full frame, finding differences of up to ∼1%. These differences are incorporated into the calibration factors. We find that the scatter in the calibration factor is typically <2%, with about half of the filter+detector[+mask] combinations reaching <1% scatter. There are no trends with detector effects such as the count rate and well depth. Images in a handful of filters of the Large Magellanic Cloud and globular cluster 47 Tuc show that residual detector-to-detector offsets are typically small (<1%), but can be as high as 4%–5%. The NIRCam detectors are found to be quite stable, with possible count-rate decreases of <0.4% per year, which is within the calibration uncertainties. These new calibration factors were incorporated into the JWST pipeline in 2026 March.",
  "abstract_shown": true,
  "affiliations": [
    "Space Telescope Science Institute"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Martha L. Boyer",
      "orcid": "0000-0003-4850-9589"
    },
    {
      "affs": [
        0
      ],
      "name": "Benjamin Sunnquist",
      "orcid": "0000-0003-3759-8707"
    },
    {
      "affs": [
        0
      ],
      "name": "Bryan Hilbert",
      "orcid": "0000-0002-6875-1543"
    },
    {
      "affs": [
        0
      ],
      "name": "Dan Coe",
      "orcid": "0000-0001-7410-7669"
    },
    {
      "affs": [
        0
      ],
      "name": "Varun Bajaj",
      "orcid": "0009-0008-4009-3391"
    },
    {
      "affs": [
        0
      ],
      "name": "Paul Bennet",
      "orcid": "0000-0001-8354-7279"
    },
    {
      "affs": [
        0
      ],
      "name": "Julien H. Girard",
      "orcid": "0000-0001-8627-0404"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3ggm3fqnrjwr0.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-3881/aea6b4",
  "fulltext_url": null,
  "id": "3ggm3fqnrjwr0",
  "issns": [
    "0004-6256",
    "1538-3881"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-3881/aea6b4",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3105|Astronomy and Astrophysical Research"
    ]
  ],
  "openalex": "W7202210535",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-3881/aea6b4/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/3ggm3fqnrjwr0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:14Z",
      "native_id": "10.3847/1538-3881/aea6b4",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-3881/aea6b4"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3105|Astronomy and Astrophysical Research",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "The James Webb Space Telescope Absolute Flux Calibration. VI. Near-infrared Camera Imaging and Coronagraphy",
  "title_text": "The James Webb Space Telescope Absolute Flux Calibration. VI. Near-infrared Camera Imaging and Coronagraphy",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:14Z",
  "url": "https://research.draconitic.com/paper/3ggm3fqnrjwr0",
  "venue": "The Astronomical Journal",
  "versions": []
}