Iridoschisis

Iridoschisis (from ancient Greek Iridios - rainbow + -xis, suffix -is), a false rainbow - an optical phenomenon when an observer sees two or more images of the Sun, Moon or other bright object against the background of another object (clouds, mountains, building). As with a regular rainbow, it is formed due to the refraction of light in drops of water, pieces of ice, ice crystals or icy frost. When observing a false rainbow, it is important to remember that the second image is obtained due to the reflection of light from the object causing this appearance.

This category also includes illusions that visually appear to be rainbows in the sky or on the horizon, or inside various objects: star stripes in racing clouds, silvery “chains” in the distance, or a snowy rainbow over an evening city. Sometimes iridischisis is confused with the polar rainbow and, based on this