The conical points are clearly visible as the intersections of the ellipse and circle in the (1-3)-plane.
The first of these shows how the ellipse x2 10y2 = 1 is transformed into a circle, the second in what way a dent disappears.
The minimum and maximum ellipse margins are 1.5 and 2.5, respectively.
It resembles a breached ellipse rather than a typical sector-collapse horseshoe.
When projected onto the target at 458, this cone illuminated an ellipse of 1 1.4 mm and contained $5 1012 photons on target.
Here, the orbit was an ellipse with a 3: 1 vertical to horizontal axis ratio.
The center-surround field configuration is formed by a photometric cube with a mirrored ellipse on the hypotenuse.
The image has been rotated to make the major axis of strain ellipse vertical.
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