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。 1sH&
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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： pHJ3nHLQ
Warning: At least 3 focal positions are recommended for finding best focus vZoaT|3
G]
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. (!N| Kl
Any MTF results are of questionable value for assessing m9Hit8 f@Q
the image quality, except in those cases where the user is L,@lp
interested only in the image of a point-like object. The bY0|N[ g
image quality for the unacceptable fields varies significan- ZQ0F$J)2~
tly over a lateral region of 12 Airy disk diameters. DDH:)=;z
Warning: The MTF results at one or more fields are inaccurate. '08=yqy4N
The mapping between entrance pupil coordinates and exit pupil coordinates # Vha7
is nonlinear. The nature of the nonlinearity is such that Code V is not '6Q =#:mc\
able to compute an accurate MTF result. Usually, this condition is Z)aUt
Srf
caused by severe pupil distortion or some discontinuity in the pupil z]9MM
2+
coordinate mapping. In all cases where the pupil coordinate mapping $p?aVO
has sufficient nonlinearity to cause this warning, the imagery is extremely ^ ovR7+V
nonstationary (non-isoplanatic) and small changes in object space C 6AUNRpl
coordinates will cause large changes in the image of a point source. {8%a5DiM
Error: The problem described here occurs at the following field(s): 9p2&) kb6
Field: 1 d{7 +w/Zi
Field: 2 xlg9T vvI
Field: 3 igR";OQk
Field: 4 [1
9,&]z
ERROR - For field 4, wavelength 1, rays at the edge of the pupil 7x4PaX(
may be ignored. Check apertures and vignetting for consistency. Np0u,t%vs
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
