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Re: Date this star chart
From: Antoine Couëtte
Date: 2023 Jul 19, 00:39 -0700
From: Antoine Couëtte
Date: 2023 Jul 19, 00:39 -0700
Dear All,
Markab on extreme top of the upper chart, about halfway between both Ladies.
Trough screen magnification and working on a screen capture printed copy - check Attachment - it can be seen that Markab RA is very close from 23h0034.3s
Hence date is very close from 1916 for which RA = 23h00m34.6s
Error estimate : +/- 2 mm on the chart translating into +/- 27.4 seconds for RA translating into +/- 8 years.
Solution : Year 1916.0 +/- 8 years.
We do hold our revenge onto Precession.
Thanks to you Frank. What is your own date determination, and through which method ?
Antoine M. "Kermit" Couëtte
