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Hey guys, thanks for the lead to atopics. Absolutely great stuff. I've
never seen a green flash and since moving to the VI have been assured
by people who have that it happens only in the tropics (St John USVI
is Lat 18� 20' N). Yet, I note that the sequence on atopics was taken
from a beach in Belgium. Guess I should have paid more attention while
vacationing on Vancouver Island in the fall of the same year (2003).
Also note the site says phenomenon can only be seen with binocs -
whilst also warning not to look at sun through binocs.  Hmm.  -Hewitt

On 8/4/09, Marcel Tschudin  wrote:
>
>  Brad, you wrote
>
>
>  > It took me a bit of time to realize that you are differentiating between two atmospheric effects.
>  >
>  > 1) Omega Sun.
>  > 2) Inversion Sun.
>
>
> A typical example for a sunset within a strong inversion is shown on this page
>  http://www.atoptics.co.uk/atoptics/gfim13.htm
>  Typical for it is the sun reaching a rectangular shape. I usually
>  didn't notice it when looking directly at it, but afterwards on the
>  photo. Also typical is the bright line which remains at the horizon
>  may be for 10, 20 or more seconds and which gives the impression that
>  the sunset is delayed.
>
>  The Omega-Sun or inferior-mirages appear typical in autumn when the
>  sea water has been warmed during summer and the atmosphere becomes
>  colder. The opposite, the Inversion-Sun or mock-mirages appear
>  typically during spring.
>
>
>  Marcel
>
>
>  >
>

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