Fog bow on the telescope Grantecan - Fogbow above Grantecan - Fog bow above the...

Fog bow on the telescope Grantecan - Fogbow above Grantecan - Fog bow above the telescope Grantecan (Gran Telescopio Canarias) in La Palma, Canary Islands. A haze arc is formed in the way of a rainbow. The light of the Sun is reflected in the water drops of the mist, but unlike raindrops, the mist droplets are much smaller: about a millimetre for the rain versus a few centiemes for the mist. As a result, the diffraction in the mist droplets is preponderant, which results in colour refracting at random angles, between 30 and 45* around the anti-sun point (opposite the Sun). Fogbow above the telescope Grantecan (Gran Telescopio Canarias) in La Palma, Canary islands