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Old 04-02-2011, 09:42 AM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
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Hi Tom
this may be useful re atmospheric differential refraction.
http://www.astro.uni-bonn.de/~mischa...s/airmass.html
your analysis and the data presented here appear to agree very well. regards Ray

Last edited by Shiraz; 04-02-2011 at 10:20 AM. Reason: add
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