Re: Siberian delights .... photos

On 5 Αύγ, 05:32, David Nakamoto <david.nakam...@xxxxxxxxxxx> wrote:
Anthony Ayiomamitis wrote:
Dear group ... and Oriel/Min,

I am delighted to present you with three sample results of last week's
total solar eclipse and which I was fortunate to view and photograph
from Novosibirsk (Siberia). With over 10,000 visitors from all over
the world, it was an event that had all the elements of a Greek
tragedy. I personally arrived in Novo very early Wednesday morning and
my fears surrounding the bad weather based on the weather predictions
were confirmed. This bad weather would literally continue into Friday,
the day of the eclipse, and I came very (!) close a day earlier
leaving for a long drive south and towards Mongolia were the weather
had been pristine.

As luck would have it, the skies cleared about two hours before first
contact and remained perfectly clear until 60 minutes after the
eclipse and at which point the dense clouds arrived once again. For
those who did head south, there were major problems with Chinese
officials and who confiscated a lot of equipment and levied fines (the
weather also degraded during the eclipse).

The first sample result documents the complete eclipse and includes
the partial phases taken very ten minutes, the two diamond rings which
announced the arrival and termination of totality and, of course,
totality itself. The second sample photo is the stunnning corona
itself and which is always an impressive sight! The third and final
sample result is the same corona with slightly more aggressive
processing using a technique commonly employed for cometary images.

For those interested, I kindly direct you to the following links :

(1)http://www.perseus.gr/Astro-Eclipses-2008-08-01d.htm
(2)http://www.perseus.gr/Astro-Eclipses-2008-08-01.htm
(3)http://www.perseus.gr/Astro-Eclipses-2008-08-01c.htm

I also looked for the SOHO sun-grazing comet that was supposedly two
degrees to the southwest of the eclipsed sun but no luck. However,
Venus was an easy and as always impressive sight.

Anthony.

OK.  I'm not even going to ask how much filtering and processing you did
to get that shot of totality, let alone how many hours.  But with those
long Siberian summer days, you had the time to kill.   (^_^)

By the way, terrific shots !

   --- Dave

Hi Dave,

The final shot of totality is based on 15 exposures as noted to the
right of the image on my webpage. I used layer masks to incrementally
build up the corona using longer and longer exposures. During totality
itself, I shot a complete set of exposures ranging from 1/1000 to 1/15
sec and then played around with the ISO (100->200->400) so as to get
as rich a dynamic range as possible (please keep in mind that due to
serious weight restrictions by Aeroflot, I was reduced to taking with
me a meagre CG3/EQ2 and without any motors running).

Anyway, total processing two about two hours and, in part, it is
thanks to my experience from 2006.

Anthony.
.

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