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。 \YF;/KwX$
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: ,.=7{y~
Warning: At least 3 focal positions are recommended for finding best focus Y![i=/
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. Q=[ IO,f
Any MTF results are of questionable value for assessing &"Cy&[
the image quality, except in those cases where the user is `s=Z{bw
interested only in the image of a point-like object. The =mcQe^M
image quality for the unacceptable fields varies significan- +Qzl-eN/+
tly over a lateral region of 12 Airy disk diameters. 4v5qK
Warning: The MTF results at one or more fields are inaccurate. Sc}Rs
The mapping between entrance pupil coordinates and exit pupil coordinates /=#~8
is nonlinear. The nature of the nonlinearity is such that Code V is not ,}>b\(Lk
able to compute an accurate MTF result. Usually, this condition is |L}tAS`8
caused by severe pupil distortion or some discontinuity in the pupil |VyN>&r~6
coordinate mapping. In all cases where the pupil coordinate mapping i"DyXIrk2
has sufficient nonlinearity to cause this warning, the imagery is extremely 6y?uH;SL
nonstationary (non-isoplanatic) and small changes in object space 0d~?|Nv -
coordinates will cause large changes in the image of a point source. E2.!|u2
Error: The problem described here occurs at the following field(s): H#nJWe_9A
Field: 1 &g*1 If
Field: 2 ,%V%g!6{
Field: 3 Yyw3+3
Field: 4 1guiuR4
ERROR - For field 4, wavelength 1, rays at the edge of the pupil 7g o Rj
may be ignored. Check apertures and vignetting for consistency. 4QiV@#o:
这个究竟是什么问题呢?好像是和视场有关。求高人指点。