sky-brightness

A module to try to determine the current brightness of the sky. It uses the time of day, the season, current weather and current moon brightness to compute a number from 0 to 1.

Please note: Under construction...

Installation

npm install sky-brightness --save

Usage

var SkyBrightness = require('sky-brightness');

var sky = new SkyBrightness({
    latitude: 55.70,
    longitude: 13.21
});

console.log('Brightness index of the sky is currently', sky.getPerceptualBrightness());

Methods

• getSolarBrightness() - How bright is the sun right now? Returns an index from 0 - 1.
• getLunarBrightness() - Full moon? Half moon? Returns an index from 0 - 1.
• getWeatherBrightness() - How does the current weather affect the light. Returns an index from 0 - 1.
• getPerceptualBrightness() - Returns an index trying to reflect the perceptual light in the sky.