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Thanks!

> If you would have taken some photos of the setting sun,

At the moment of Sun setting, I was busy with Venus observation
(I spotted it few minutes before the sunset), while Bill was taking
a walk towards the end of the jetty protruding to the lake
(and was chilled so much that he turned the heater in the car
when we were going back 1/2 hour later, while I was suffering from heat).

We also had an artificial horizon, but who uses an artificial horizon
when the real one is available:-)

If this explanation is correct and accounts for all our systematic error,
then the shape of the Sun was like a sort of mango or a lemon which had
to be visible by the naked eye. Unfortunately we were not looking at the
Sun when it set.

Alex.

> Greg probably can contribute with his observations made some months ago
> while St. Ana was blowing; this likely corresponded to a similar situation.
>
> Marcel

   

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