Reconstruction of the
2009 West Overton formation
1.
Draw a circle. Draw and extend the horizontal and vertical centerlines.
2.
Construct two inscribed equilateral triangles of circle 1, one pointing to the left, one pointing to the right.
3.
Construct two circles, both passing through the upper and lower mutual intersections of triangles 2, one tangent to circle 1 at the lefthand side, one at the righthand side.
4.
Construct a "two-points" circle (defined by the end-points of a centerline) between the inner intersections of both circles 3 with the horizontal centerline.
5.
Construct the inscribed nonagon (regular 9-sided polygon) of circle 1, pointing to the left.
6.
Construct the inscribed circle of nonagon 5.
7.
Copy circle 1 to the righthand intersection of circle 6 and the horizontal centerline. Move this circle (copy and delete original) to its own corresponding intersection.
8.
Copy circle 6 to the center of circle 7.
9.
Copy circle 4 to the center of circle 7.
10.
Construct the inscribed hexagon (regular 6-sided polygon) of circle 1, pointing up.
11.
Construct a circle concentric to circle 7, tangent to the righthand side of hexagon 10.
12.
Copy circle 9 while mirroring it with respect to the vertical centerline.
13.
Copy circle 1 to the center of circle 12.
14.
Copy circle 6 to the center of circle 12.
15.
Copy circle 11 to the center of circle 12.
16.
Construct a circle concentric to circle 1, tangent to circle 9 at the lefthand side.
17.
Copy circle 6 to the lefthand intersection of circle 9 and the horizontal centerline, and move it to its own corresponding intersection.
18.
Copy circle 1 to the center of circle 17.
19.
Construct a circle concentric to circle 1, tangent to circle 18 at the righthand side.
20.
Copy circle 11 to the center of circle 17.
21.
Construct a circle concentric to circle 1, tangent to circle 20 at the righthand side.
22.
Construct a circle centered at the righthand intersection of circle 20 and the horizontal centerline, tangent to circle 18 at the righthand side.
23.
Copy circle 22 to its righthand intersection with the horizontal centerline.
24.
Construct a circle concentric to circle 1, tangent to circle 23 at the righthand side.
25.
Construct a circle concentric to circle 17, tangent to circle 23 at the righthand side.
26.
Copy circle 25 two times, to the centers of circles 9 and 12.
27.
Copy circle 22 four times, to the intersections of circles 24 and 26.
28.
Construct a circle, at its lefthand side tangent to circle 6 (at the righthand side), and tangent to the two righthand sides of the right-pointing triangle 2, as shown.
29.
Construct a "two-points" circle between the center of circle 28 and its lefthand intersection with the horizontal centerline.
30.
Copy circle 29 four times, to the centers of circles 27.
31.
Circles 1, 4, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 19, 21, 27 and 30 are used for the final reconstruction.
32.
Remove all parts not visible within the formation itself.
33.
Colour all areas corresponding to standing...
34.
...or to flattened crop, and finish the reconstruction of the 2009 West Overton formation.
35.
The final result, matched with the aerial image.
Copyright © 2009, Zef Damen, The Netherlands

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Mark Fussell & Stuart Dike

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