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The
expression, “Being in the right place, at the right time”, certainly
applies to your chances of viewing a total eclipse of the sun.
The one which occurred over parts of Devon and Cornwall on August,
11, 1999 was hugely anticipated.
Unfortunately the great British weather conspired to largely obscure
that event.
I was fortunate enough to be on safari in Southern Africa during
the eclipse on December, 4, this year and it was a sight I will
never forget.
First
Contact
We
had pulled into a campsite near Maun in Botswana the previous night.
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| The
diamond ring silhouettes the African Bush. Courtesy of Renu
Arya. |
Although
many campsites in the area had been very quiet, this one was full
with groups eagerly awaiting the events of the following day.
We left Maun at 5am on the 4th and drove for about 200km to ensure
we were well within the path of totality.
Weather conditions were perfect; good visibility
with only a few wisps of cirrus cloud in the sky.
First contact, when the moon began to pass over the disc of the
sun, occurred at about 7am with the Sun at about an elevation of
20 degrees in the sky.
This was our cue to pull off the road and prepare a slap-up fried
breakfast.
Bailey's
Beads
At
about 7:50, with breakfast having been quickly devoured, we began
to settle down to view the eclipse using the appropriate viewing
glasses.
At this stage there was already a perceptible change in the light
- difficult to describe, being neither dawn nor dusk.
At about 8:10am things seemed to happen very quickly.
Did I notice Bailey’s Beads or the diamond ring effect? It is difficult
to say. I simply did not know where to look next.
I did notice the stars appearing in the sky but where was the shadow
of the moon which was supposed to be rushing towards me from the
west?
Certainly the cacophony of animal and bird noise that is ever present
in the African bush had died down.
Totality
I
do seem to recall seeing the diamond ring effect before the Second
Contact was made and the eclipse became total.
The
blackness of the disc of the moon highlighted the Sun’s corona although
I did not notice the reddish glow associated with the chromosphere.
Totality lasted for around two minutes, followed by Third Contact
when the diamond ring again became visible.
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| Richard
Angwin - Wiltshire weather is his expertise. |
As
the light began to return I did notice one unusual feature.
Our temporary campsite had been inundated with bees whilst we were
cooking breakfast. Now they had become very still and there were
many moths around the vehicle.
As the light continued to increase the moths disappeared and the
bees resumed their activity.
There had been no major change in temperature during the eclipse
and there had been no gustiness or shadow.
This
may well be due to the relatively low angle of the sun.
Fourth
Contact
The
Fourth Contact did not occur for at least another hour, by which
time we were bowling along the main road on our way to Zambia.
Everyone in our party, and none of them had more that a passing
interest in things astronomical, agreed that it had been a remarkable
sight, one which none of us will ever forget.
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