20" f/3.9 CCD 1575 ij2
19.8674	0.0	Mirror, obstruction diameters (mm)
caustic
157.86384 Source distance (0=moving source)
y, mm	X, mm	Y, mm
 	1.36823 4.55067 -0.05171358
 	2.73615 4.55067 -0.10259862
	4.10344 4.55067 -0.15173349
 	5.46979 4.55067 -0.19958782
  	6.83490 4.55067 -0.24499843
	8.19844 4.55067 -0.28669430
	9.56013 4.55067 -0.32495934
*
-1.000	0.0 Conic targets:  b, R (mm)
0.0000	Measurement std deviation, mm
156.531 Longitudinal reading bias, mm
INCH