Saturday, 5 April 2008

A halo on Mars and other papers by Gunther Können

Gunther Können, who has produced a decent number of halo papers, has put his works on-line. These are found in the atmospheric optics section of his web page ( 1 ). Among others, there is an article about subsun on Mars (right photo), as photographed in 2006 by Mars Global Surveyor (left photo). Also, the extensive work on halo systematics, "A general setting for halo theory" by Tape and Können, is available.

Image credits:
left - NASA/JPL-Caltech/Corby Waste
right - NASA/JPL/Malin Space Science Systems


  1. very nice.
    cassini rainbow:

  2. marko riikonen6 April 2008 at 15:59

    From NASA pages I understood that the cassini rainbow is actually and opposition effect.

  3. "эффект противостояния"? не совсем понял как это получается. Что-то вроде глории?

  4. marko riikonen6 April 2008 at 21:50

    More like a heiligenschein. The color is an image processing artefact.

  5. marko riikonen7 April 2008 at 20:41

    The NASA guys had ligned the three RGB photos on the rings, that's why the colors in heiligenschein as spacecraft was moving. Of course, a true stacker would have aligned on the heiligenschein.