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。 #S[:Q.0 ;
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： 'ADaz75`*r
Warning: At least 3 focal positions are recommended for finding best focus W\{gBjfE
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. []K5l%
Any MTF results are of questionable value for assessing Ga\E`J$c
the image quality, except in those cases where the user is wW4/]so M
interested only in the image of a point-like object. The MB<oWH[e)
image quality for the unacceptable fields varies significan- H79|%@F"
tly over a lateral region of 12 Airy disk diameters. `sZ /'R6
Warning: The MTF results at one or more fields are inaccurate. >w:px$g4
The mapping between entrance pupil coordinates and exit pupil coordinates (h0i2>K
is nonlinear. The nature of the nonlinearity is such that Code V is not xUYUO yV
able to compute an accurate MTF result. Usually, this condition is r4}:t$
caused by severe pupil distortion or some discontinuity in the pupil e![|-m%
coordinate mapping. In all cases where the pupil coordinate mapping cad%:%p
has sufficient nonlinearity to cause this warning, the imagery is extremely S3-3pJ]~Zk
nonstationary (non-isoplanatic) and small changes in object space Or&TGwo I
coordinates will cause large changes in the image of a point source. u1y c
Error: The problem described here occurs at the following field(s): +
M2|-C
Field: 1 XUU l*5 ^
Field: 2 I71kFtvcy*
Field: 3 Rv=(D^F,
Field: 4 Aa* UV6(v
ERROR - For field 4, wavelength 1, rays at the edge of the pupil GXC :~$N
may be ignored. Check apertures and vignetting for consistency. Q!Rknj 2
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
