Parhelic circle
Videos
A parhelic circle is a type of halo, an optical phenomenon appearing as a horizontal white line on the same altitude as the Sun, or occasionally the Moon. If complete, it stretches all around the sky,
A crisp parhelic circle (horizontal line) over South Pole Station. Note that this image does not depict a solar eclipse and the sun was probably occluded by a device to protect the camera. Photo: John Bortniak, NOAA, January 1979.
A halo display observed over the South Pole. Featured in the photo are several distinct phenomena: A parhelic circle (horizontal line), a 22° halo (circle) with two sundogs (bright spots), a Parry arc, and an upper tangent arc. Photo: Cindy McFee, NOAA, December 1980.
22° sun halo with a complete parhelic circle. Photo is taken with Samsung S10 phone (wide lens) near Zazid, Slovenia, on May 19th, 2023.
A nearly complete paraselenic circle, along with a partial 22° lunar halo and the eastern moon dog. Photo is taken by the all-sky camera of the Piszkéstető Mountain Station, Konkoly Observatory (Hungary), February 2023.
Anthelion
Videos
An anthelion is a rare optical phenomenon of the halo family. It appears on the parhelic circle opposite to the Sun as a faint white spot, not unlike a sundog, and may be crossed by an X-shaped pair o
Anthelion (bottom) and 120° parhelion (top) depicted in Vädersolstavlan
