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Flats with a White T-Shirt
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18-04-2011, 06:04 PM
leon
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Join Date: Apr 2006
Location: Warrnambool
Posts: 12,453
Tee shirts, white anything that is smooth will work fine, also just the clear blue skies after Sunset will do the job as well, just point the scope straight up, and try to get the frames as close to each other as possible.
Leon
leon
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