小弟用CODEV设计了一个开普勒望远镜。目镜用的是对称式，物镜用了一个双胶合，视觉放大率为12。 _< xU"8b"5
在目镜和物镜分别优化之后，将二者组合在一起时发现Quick 2D能正常显示，但是MTF图线无法显示，有报错，如下： P
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Warning: At least 3 focal positions are recommended for finding best focus IspY%UMl
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. $S6AqUk$
Any MTF results are of questionable value for assessing ,u! c|4
the image quality, except in those cases where the user is M )Y`u
interested only in the image of a point-like object. The
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image quality for the unacceptable fields varies significan- hYF<W n3L
tly over a lateral region of 12 Airy disk diameters. qc@CV:
Warning: The MTF results at one or more fields are inaccurate. FJ~Dg3F1
The mapping between entrance pupil coordinates and exit pupil coordinates ZSHc@r*>
is nonlinear. The nature of the nonlinearity is such that Code V is not 27gK
Y
Zf;
able to compute an accurate MTF result. Usually, this condition is \u:xDS(
caused by severe pupil distortion or some discontinuity in the pupil N!$y`nwiw'
coordinate mapping. In all cases where the pupil coordinate mapping ba|~B8rII[
has sufficient nonlinearity to cause this warning, the imagery is extremely +xB !T1p D
nonstationary (non-isoplanatic) and small changes in object space (%\N-[yZ
coordinates will cause large changes in the image of a point source. ]#_ ,?d
Error: The problem described here occurs at the following field(s): Wrt3p-N"D
Field: 1 *h$Dh5%P
Field: 2 x1wm ]|BIf
Field: 3 L1M]ya!l
Field: 4 / [:@j+n\
ERROR - For field 4, wavelength 1, rays at the edge of the pupil + d]}
may be ignored. Check apertures and vignetting for consistency. irpO(>LK
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
