Hi Robin,
Of course, contacting Gantenbrink and asking him all the questions is a great idea. Unfortunately, I do not know people who personally know him, and he can ignore the letter from an unknown person. I will still try to get data from a 3-D survey of the Khufu pyramid. As I wrote earlier, the easiest way to check which of the two researchers is correct is to determine the actual course numbers in which the observed outputs of the KC shafts are located. Since the data on the course number for the northern shaft differ not even by 1 course, but by 2 courses (Petrie - 101th, Gantenbrink - 103th), even a 3-D model of not very high resolution will allow us to determine who is right.
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But in the meantime is it not possible to use Gantenbrink's cyberdrawings to estimate the position of the exit of KC south shaft relative to pyramid centre?
Only if there are exact values in the drawing.
I found another error in Gantenbrink's report.
In the "Additional Measurements" section [
www.cheops.org], he states that the elevation of the northern shaft outlet to the existing surface is 78.43m.
If we draw this level on his cyberdrawing for the northern shaft, then it is obvious that his numerical data contradict his own figure:
and the level of 78.43 m. = 3087.8 in. corresponds to 101 course, which coincides with Petrie's data (northern outlet is located in the 101 course at an altitude of 3069.4 in. = 77.96 m.)
Thus, the numerical data of both researchers about the elevation of the KCN outlet approximately coincide and belong to 101 course, while the cyberdrawing shows something completely different to reach the 105 course of the casing, as needed for Gantenbrink's geometric model.
As for the azimuths of the shafts. It seems to me that it would be better to start considering the southern shafts, as more simple and not having horizontal bends, and then consider in more detail the northern ones. Unfortunately, I cannot see cyberdrawings now, although I could earlier, because CADViewer is not available for downloading to me. Please tell me, are there any exact values in the cyberdrawings that allow us to determine the horizontal positions of the shaft outlets relative to the axes of the pyramid?
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In the case of KC north why go so far to the west (almost to the pyramid centre)
It’s a puzzle.
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There must be a good reason why, in this one case, the shaft has a different azimuth from the rest of the pyramid.
Perhaps you’re right. But what stellar target might it points?
In the figure, the azimuth of the KCN shaft is about 2° to east. Thuban reaches this azimuth and the altitude of 31.5° in about 2380 BC. It's too late.
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I am afraid I have no information about Tallet's dating. I must confess that when I read that 'Khufu died in the spring of 2483 BC' it brought to mind Archbishop Ussher's famous claim that the first day of creation was October 23, 4004 BC.
In fact, not only Prof. Tallet, but also many other Egyptologists give extremely accurate dates for the events in the 3rd millennium BC and calculate them based on their own preferences.
Alex.
Edited 1 time(s). Last edit at 11/11/2020 08:00AM by keeperzz.