November 18, 2020 03:59PM
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Registered: 4 years ago
Posts: 170
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Hi Chris,
Your review of the QC shafts is exhaustive, so I have nothing to add except for three small comments:
1) It is not clear why Gantenbrink gives the angle of the QCN shaft with an accuracy of 4 digits after the point (in other data, he uses one digit after the point).
2) Since QC shafts have no exits to the surface, we do not have any additional data to check the accuracy of the surveys. Petrie measured only the initial angles and this is not enough. Gantenbrink gives a value of crazy accuracy for the southern shaft and at the same time a very wide range for the northern one, without going into details. The Djedi team didn’t seem to have taken their own angle measurements, since they copy Gantenbrink's data.
3) The most likely target of the southern shaft is Sirius, while for the northern one, due to the great uncertainty with the angle, two candidates are possible - Kochab and Mizar. The first of the two seems more preferable because (as we discussed with Robin) the culmination of Kochab is linked with the rise of the Sah asterism in the east.
Alex.
Edited 1 time(s). Last edit at 11/18/2020 04:05PM by keeperzz.
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robin cook |
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Mark Heaton |
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Jim Alison |
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keeperzz |
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robin cook |
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keeperzz |
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robin cook |
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keeperzz |
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keeperzz |
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November 11, 2020 12:53AM |
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Hermione |
November 11, 2020 07:42AM |
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keeperzz |
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Hermione |
November 11, 2020 07:45AM |
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keeperzz |
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Hermione |
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keeperzz |
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Hermione |
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robin cook |
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Hermione |
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keeperzz |
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Kanga |
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keeperzz |
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keeperzz |
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Kanga |
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keeperzz |
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keeperzz |
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robin cook |
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robin cook |
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keeperzz |
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robin cook |
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keeperzz |
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robin cook |
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keeperzz |
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Kanga |
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keeperzz |
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Kanga |
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keeperzz |
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keeperzz |
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Kanga |
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keeperzz |
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keeperzz |
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Kanga |
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keeperzz |
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keeperzz |
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Kanga |
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keeperzz |
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June 08, 2021 10:15AM |