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Re: Angular Distance Between Stars By Camera and Sextant
From: Marcel Tschudin
Date: 2012 Sep 18, 23:04 +0300
From: Marcel Tschudin
Date: 2012 Sep 18, 23:04 +0300
Greg, regarding
Marcel
On Tue, Sep 18, 2012 at 10:43 PM, Greg Rudzinski <gregrudzinski@yahoo.com> wrote:
Your nomenclature may be misleading. "True" is in this context generally used for the positions without atmosphere. If I understand you correct, then your refraction correction relates to a correction for difference in refraction, because your sextant observations from each star already contain refraction. Your "true distance" corresponds then actually to observed distance because they include refraction. But, yes, indeed, the various results finally "converge" and we can now better evaluate them.If you look at my original results:
Alioth Alkaid Hc 31*37*
10* 27.1' observed distance by sextant
+0.3' refraction correction by table10* 27.4' true distanceLow 0.2'
10* 27.6' true calculated distance by William's on-line calculator
Marcel
