An Unusual Solar Halo

    Abstract

    MR. J. E. BOWMAN, Armament Research Establishment, Fort Halstead, Kent, writes : "On May 10 at Shoeburyness I observed a solar halo of an unusual size. For about the last hour before sunset a well-defined parhelion of the 22° halo was visible to the north of the sun ; but there was no trace of the 22° halo itself. Just after the sun had set, however, the upper part of the 22° halo appeared, accompanied by a much smaller halo, the radius of which I estimated to be about 8-9°, and a sun pillar extending to some 15° above the sun. A patch of relatively greater brightness appeared where the sun pillar intersected the 8° halo. The whole spectacle, which lasted until a quarter of an hour after sunset, was extremely faint and could be distinguished only with difficulty. The display of halo phenomena continued after dark, for at 10 p.m. the moon was accompanied by the two paraselense of the 22° halo. Again, however, there was no trace of the 22° halo itself.

    Rights and permissions

    Reprints and Permissions

    About this article

    Cite this article

    An Unusual Solar Halo. Nature 163, 904 (1949). https://doi.org/10.1038/163904a0

    Download citation

    Comments

    By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.