AS d xAA d x kAt2 xAA619

but the constant k for the Sun is ~13 arc-seconds per mean solar day. With 8 = -23.90°, A = 224°, z = 89.4333°, and f = 56.18833°, AA/A8 = 2.365. Therefore, 13 arc-seconds of declination, the change in the declination of the Sun 24 hours from the summer solstice, causes a shift of only ~30 arc-seconds of azimuth in this interval. For the Sun,

so that here, G0 = 0.063 x 43.7 x 2.365 = 6.5 m (~21ft), compared with Thom's (1971/1973/1978, p. 38) value of 19ft. From the description of the platform and contour chart given by MacKie (1974, especially, pp. 178-181), which shows at least 50 m (±4G) of a path length normal to the direction of the col, there should be ample room to establish the correct vantage point for the Sun and, therefore, to establish the location of the cairn and menhir in the intervening valley. However, McCreery et al. (1982) suggest that the col was not visible over this range. Thus, the controversy continues, but the feasibility of high-precision determination at this site seems clear. We conclude our comments on Kintraw by noting that it is interesting that a boulder is found on the platform in line with the col and the menhir, and that a petrofabric analysis by J.S. Bibby, appended to MacKie's paper, supports a conclusion that the platform was deliberately created rather than a natural feature of the landscape.

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