2011 Overton Down formation
|
Reconstruction of the 2011 Overton Down formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Copy circle 1 to its righthand intersection with the horizontal centerline. |
| 3. |
| Copy circle 1 to the righthand intersection of circle 2 and the horizontal centerline. |
| 4. |
| Copy circle 1 to the righthand intersection of circle 3 and the horizontal centerline. |
| 5. |
| Copy circle 1 to the righthand intersection of circle 4 and the horizontal centerline. |
| 6. |
| Construct a circle concentric to circle 1, tangent to circle 5 at the righthand side. |
| 7. |
| Construct a circle centered at the righthand intersection of circle 6 and the horizontal centerline, passing through the center of circle 5. |
| 8. |
| Construct a circle concentric to circle 7, passing through the center of circle 4. |
| 9. |
| Construct a circle concentric to circle 7, passing through the center of circle 3. |
| 10. |
| Construct a circle concentric to circle 7, passing through the center of circle 2. |
| 11. |
| Construct a circle concentric to circle 7, passing through the center of circle 1. |
| 12. |
| Copy circle 7 to the upper intersection of circle 6 and the vertical centerline. |
| 13. |
| Copy circle 8 to the center of circle 12. |
| 14. |
| Copy circle 9 to the center of circle 12. |
| 15. |
| Copy circle 10 to the center of circle 12. |
| 16. |
| Copy circle 11 to the center of circle 12. |
| 17. |
| Draw the connecting line between the intersections of circles 11 and 16. |
| 18. |
| Draw the connecting line between the centers of circles 7 and 12. |
| 19. |
| Construct a circle centered at the intersection of circle 6 and line 17, passing through the intersection of circle 10 and line 18. |
| 20. |
| Construct a circle centered at the intersection of circle 10 and line 18, passing through the center of circle 19. |
| 21. |
| Draw the connecting line between the intersections of circles 19 and 20, and extend this line up to line 18. |
| 22. |
| Construct a circle centered at the intersection of lines 18 and 21, passing through the intersection of circle 10 and line 18. |
| 23. |
| Draw the connecting line between the center of circle 6 and the upper intersection of circles 9 and 16, and extend this line up to circle 10. |
| 24. |
| Construct a circle centered at the intersection of circle 6 and line 23, passing through the intersection of circle 9 and line 18. |
| 25. |
| Construct a circle centered at the intersection of circle 9 and line 18, passing through the center of circle 24. |
| 26. |
| Draw the connecting line between the intersections of circles 24 and 25, and extend this line up to line 18. |
| 27. |
| Construct a circle centered at the intersection of lines 18 and 26, passing through the intersection of circle 9 and line 18. |
| 28. |
| Construct a circle centered at the intersection of circle 6 and line 23, passing through the intersection of circle 16 and line 18. |
| 29. |
| Construct a circle centered at the intersection of circle 16 and line 18, passing through the center of circle 28. |
| 30. |
| Draw the connecting line between the intersections of circles 28 and 29, and extend this line up to line 18. |
| 31. |
| Construct a circle centered at the intersection of lines 18 and 30, passing through the intersection of circle 16 and line 18. |
| 32. |
| Copy circles 22, 27 and 31, while mirroring with respect to line 17. |
| 33. |
| Create a pattern by removing all parts from circles 22, 27, 31 and 32, outside the area enclosed by circle 6 and line 18, as shown. |
| 34. |
| Construct a "two-points" circle (defined by the two end-points of a centerline) between the upper intersection of circles 10 and 15 and the intersection of circle 6 and line 17. |
| 35. |
| Construct a circle concentric to circle 6, passing through the center of circle 34. |
| 36. |
| Construct a circle tangent to circles 9 and 16, and tangent to circle 6 at the outside, as shown. |
| 37. |
| Copy circle 36 to the upper intersection of circles 10 and 15, and move this circle (copy and delete original) to its own upper intersection with line 17. |
| 38. |
| Construct a circle concentric to circle 6, passing through the center of circle 37. |
| 39. |
| Draw the connecting line between the center of circle 6 and the upper intersection of circles 11 and 14, and extend this line up to circle 15. |
| 40. |
| Copy circle 36 two times, to the intersections of lines 23 and 39 with circle 38. |
| 41. |
| Copy circles 7, 8, 9, 10 and 11 two times, to the lefthand intersection of circle 6 with the horizontal, and to the lower intersection with the vertical centerline. |
| 42. |
| Copy pattern 33, and circles 37 and 40 as a whole three times, while rotating about the center of circle 6 by 90°, 180° and 270°, respectively. |
| 43. |
| Circles 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 35, 37, 40 and 41, and patterns 33 and 42, are used for the final reconstruction. |
| 44. |
| Remove all parts not visible within the formation itself. |
| 45. |
| Colour all areas corresponding to standing... |
| 46. |
| ...or to flattened crop, and finish the reconstruction of the 2011 Overton Down formation. |
| 47. |
| The final result, matched with the aerial image. |
| Copyright © 2011, Zef Damen, The Netherlands |
