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光污染估算

GET /lightpollution

基于附近人口密度获取任何位置的 Bortle 等级估算（1-9）。这是估算值而非卫星测量——使用 100 公里范围内的加权人口来近似天空亮度。返回 Bortle 等级、天空质量评级、估计肉眼可见星数、SQM（天空质量计）估算和极光观赏适宜度。对大城市和偏远地区准确；对郊区精度较低。适用于天文应用、极光旅游、天文摄影规划和暗空意识。

参数

lat 必填

Latitude

lon 必填

Longitude

请求示例

基本用法
curl "https://nordapi.ee/api/v1/lightpollution?lat=59.437&lon=24.754"
Tallinn, Estonia
curl "https://nordapi.ee/api/v1/lightpollution?lat=59.437&lon=24.754"
Lofoten, Norway (dark sky)
curl "https://nordapi.ee/api/v1/lightpollution?lat=68.2&lon=14.6"
Central London
curl "https://nordapi.ee/api/v1/lightpollution?lat=51.51&lon=-0.13"
Rural Iceland
curl "https://nordapi.ee/api/v1/lightpollution?lat=65.0&lon=-18.0"

实时响应 

{
  "data": {
    "aurora_suitability": "fair",
    "bortle_class": 6,
    "bortle_description": "Bright suburban sky. Milky Way only visible near zenith. Sky glow extends to 35° above horizon.",
    "disclaimer": "This is an estimate based on nearby population density, not satellite measurements. Actual light pollution may vary due to terrain, local lighting, and atmospheric conditions.",
    "latitude": 59.437,
    "longitude": 24.754,
    "methodology": "Bortle class estimated from weighted population within 100km. Closer cities contribute more. Accurate for major cities and remote areas; less precise for suburbs and small towns.",
    "naked_eye_stars": "200+",
    "nearby_population": {
      "nearby_cities": [
        {
          "country": "",
          "distance_km": 0.0,
          "name": "nearby city",
          "population": 450000
        }
      ],
      "nearest_city": "nearby city",
      "nearest_distance_km": 0.0,
      "total_population": 450000,
      "weighted_population": 450000
    },
    "recommendations": [
      "Drive 30-60 minutes away from the city for significantly darker skies"
    ],
    "sky_quality": "poor",
    "sqm_estimate": 18.94
  },
  "success": true
}
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