{
  "id": "zwo-imx174-mono-ambiguous-scale",
  "sensor": {
    "manufacturer": "Sony",
    "model": "IMX174",
    "mode": "mono",
    "compatible_variants": [
      "mono",
      "monochrome",
      "IMX174M",
      "IMX174 mono"
    ]
  },
  "source": {
    "title": "Mono174 sensor response, ASI Mini manual page 7",
    "author": "ZWO",
    "page_url": "https://i.zwoastro.com/zwo-website/manuals/ZWO_ASIMini_Manual_EN.pdf",
    "asset_url": "https://i.zwoastro.com/zwo-website/manuals/ZWO_ASIMini_Manual_EN.pdf",
    "asset_file": "zwo-asi-mini-manual.pdf",
    "scope": "unknown",
    "camera_model": "ASI174MM Mini",
    "asset_sha256": "21ba1639a442c8cd20b7d27d1feb2a6a45026ebb4abf11e54bc0c577c19faa84",
    "retrieved_at": "2026-09-29T22:12:22.124150+00:00"
  },
  "response_unit": "percent",
  "response_scale": "unknown",
  "channels": [
    {
      "channel": "mono",
      "wavelengths_nm": [
        310,
        320,
        330,
        340,
        350,
        360,
        370,
        380,
        390,
        400,
        410,
        420,
        430,
        440,
        450,
        460,
        470,
        480,
        490,
        500,
        510,
        520,
        530,
        540,
        550,
        560,
        570,
        580,
        590,
        600,
        610,
        620,
        630,
        640,
        650,
        660,
        670,
        680,
        690,
        700,
        710,
        720,
        730,
        740,
        750,
        760,
        770,
        780,
        790,
        800,
        810,
        820,
        830,
        840,
        850,
        860,
        870,
        880,
        890,
        900,
        910,
        920,
        930,
        940,
        950,
        960,
        970,
        980,
        990,
        1000,
        1010,
        1020,
        1030,
        1040,
        1050
      ],
      "values": [
        4.4628,
        4.9587,
        9.0909,
        15.3719,
        21.8182,
        27.7686,
        33.8843,
        41.3223,
        48.4298,
        53.8843,
        59.1736,
        64.2975,
        68.0992,
        70.5785,
        72.7273,
        74.2149,
        75.2066,
        76.8595,
        77.3554,
        77.3554,
        77.1901,
        77.0248,
        75.5372,
        73.8843,
        72.0661,
        69.7521,
        67.438,
        65.2893,
        63.6364,
        61.157,
        58.843,
        57.0248,
        54.5455,
        52.2314,
        49.7521,
        47.7686,
        45.2893,
        43.1405,
        40.8264,
        38.5124,
        36.1983,
        34.2149,
        31.5702,
        29.9174,
        28.0992,
        26.1157,
        24.6281,
        22.9752,
        21.3223,
        20.9917,
        17.8512,
        16.0331,
        15.3719,
        14.3802,
        13.0579,
        11.7355,
        10.2479,
        9.4215,
        9.0909,
        7.7686,
        6.7769,
        6.1157,
        5.4545,
        4.6281,
        4.1322,
        3.4711,
        2.9752,
        2.4793,
        2.1488,
        1.8182,
        1.4876,
        1.157,
        0.9917,
        0.8264,
        0.6612
      ]
    }
  ],
  "license_status": "unknown",
  "limitations": [
    "Caption calls this a relative QE curve, while the vertical axis says quantum efficiency (%). The scale is ambiguous and remains unknown.",
    "Published values are preserved on the 0-to-80 axis without normalization or interpretation as measured absolute QE.",
    "The manual does not establish whether the plotted response excludes the camera window or sensor cover glass; source scope remains unknown.",
    "The very low long-wavelength tail can be indistinguishable from the baseline; unobserved pixels remain missing."
  ],
  "digitization": {
    "method": "color-threshold source trace center at nearest pixel columns; rejects isolated pixels and long grid runs; no rescaling, interpolation or extrapolation",
    "script": "scripts/extract-astro-research-curves.py",
    "image_size_px": [
      1191,
      1684
    ],
    "image_sha256": "fa9b0d8b6cdba2ab0e3ce1672712b3c3b27fac67eafc4ce6a1e963345985e35b",
    "pdf_page": 7,
    "axes": {
      "x_pixel": [
        342,
        909
      ],
      "y_pixel": [
        432,
        190
      ],
      "wavelength_nm": [
        300,
        1100
      ],
      "response": [
        0,
        80
      ]
    },
    "sample_step_nm": 10,
    "channels": [
      {
        "channel": "mono",
        "color": "black",
        "threshold": 125,
        "minimum_trace_pixels": 1
      }
    ],
    "maximum_detected_trace_width_px": 7,
    "raster_tolerance_px": 5,
    "wavelength_raster_tolerance_nm": 7.0547,
    "response_raster_tolerance": 1.6529,
    "source_measurement_uncertainty": "unknown"
  },
  "downstream_reuse_grant": false
}