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Re: stange results from AM and PM sun shots
From: Bill B
Date: 2012 Sep 27, 22:33 -0400
From: Bill B
Date: 2012 Sep 27, 22:33 -0400
On 9/27/2012 7:54 PM, bill wrote: > 3. Due to refraction, we are seeing a limb that is not there in a > vacuum. The refraction correction would be -0d 33!8 for the center of > the sun or upper limb on the horizon. Therefore it is quite possible to > have an Hc north of 90d or 270d near the autumnal equinox. If memory > serves there is about an 8 day lag past the equinox before light and > dark are equal. Correction "..an Hc north of 90d or..." should read, "...an azimuth north of 90d or..." Bill B
