Primary & Secondary Moonbow

A single moonbow is a rarity, a primary and a secondary bow more so. The faint and broad secondary is at upper right. Seen by Stuart Reynolds overlooking Teignmouth, Devon, UK. The moon was within 14 hours of full.
©Stuart Reynolds, shown with permission
Moonbows are usually so faint that, although coloured like an ordinary daylight bow, they appear grey to our eyes The bow is too faint to excite our colour vision. Similarly, a moonlit landscape is more or less monochromatic, colours are sometimes suggested by the brain when it 'knows' that particular objects - like trees and grass - have particular colours.

This enhanced version of the image shows that to the more sensitive eye of the camera all the daylight colours are still present.
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