Abstract

We report what is believed to be the first photographic recording of a quaternary rainbow in nature. It appears on the Sun side of the sky with its red arc at a radius of about $45°$ from the Sun. The original pictures have been subjected to various forms of image processing to reveal the tertiary rainbow as well as the quaternary rainbow, which are separated by only a few degrees with their colors reversed and their red arcs adjacent to each other.

© 2011 Optical Society of America

Photographic evidence for the third-order rainbow

Michael Großmann, Elmar Schmidt, and Alexander Haußmann
Appl. Opt. 50(28) F134-F141 (2011)

Photographic observation of a natural fifth-order rainbow

Harald E. Edens
Appl. Opt. 54(4) B26-B34 (2015)

Probable photographic detection of the natural seventh-order rainbow

Harald E. Edens and Gunther P. Können
Appl. Opt. 54(4) B93-B96 (2015)

Visibility of natural tertiary rainbows

Raymond L. Lee, Jr. and Philip Laven
Appl. Opt. 50(28) F152-F161 (2011)

Observation, analysis, and reconstruction of a twinned rainbow

Alexander Haußmann
Appl. Opt. 54(4) B117-B127 (2015)