Solar Eclipse Photography on the cheap - Turkey '06
"Beta Persei" wrote in message
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"orrerymaker" ha scritto nel messaggio
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I have just got a test film back from Boots, best results using Baader
Astro-solar film over the aperture were ...
1/250 sec with a f8 mirror lens and 200ASA Kodak colour film. Tripod and
cable release are a must if lens is 200 mm or longer.
Best regards
Peter
Have you had a good sky transparency during your tests? According to
Espenak's table of exposure
http://sunearth.gsfc.nasa.gov/eclipse/SEmono/TSE2006/TSE2006tab/TSE2006-tab23.html
the best timing with your system should be 1/1000 of sec.
I did some tests during a very bright and clear Saturday with Baader ND 5,
Baader ND 3.8 and Thousand Oaks Black Polymer ND 5, using a Tamron 500 mm
f/8 and 2x multiplier lens, on Fuji Sensia film 100 ISO. Best results were
1/250 for Baader ND 5, 1/125 for Black Polymer and 1/2000 for Baader ND
3.8.
Unless you were using a very old Baader ND 6.0 which was available for the
August 1999 eclipse...
As for my own attempt to record the eclipse, I would try with the above
equipment and Thousans Oaks Black Polymer shooting three images for each
time in the range from 1/60 to 1/250 and would try the sequence with a 135
mm with same Black Polymer. Ah, the site: as Salloum, Egypt.
Clear skies,
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Beta Persei
45° 35' N
08° 51' E
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Bought from David Hinds it just states 'Baader AstroSolar' on the pack, in
the text it states a 99.999% reduction of intensity. As cameras (and
lenses) can vary I always run a test film when using new filters. There is
quite a bit of lattitude with print film, but even so it is always safer to
bracket by 2 stops. There was light cloud, and it was 10 am this morning
(in UK) , so, as you say, probably 1/1000 in Turkey?
Best regards
Peter
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