Helio-STELLA Programming and Build

Helio-STELLA measures the spectrum of visible light in 8 channels, from violet to red, plus UVA and total brightness in lux units. Specifically designed for looking upward to measure solar radiation, Helio-STELLA is useful for characterizing sunlight colors and intensities. How does the light change at sunset? Is it different from sunrise? How does the light change as the sun goes behind the moon during an eclipse?
Helio-STELLA files:
landsat.gsfc.n...