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。 Q\rf J||
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: ?k@^U9?R
Warning: At least 3 focal positions are recommended for finding best focus }p5_JXBV
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. |h%=a8
Any MTF results are of questionable value for assessing jl9hFubwW
the image quality, except in those cases where the user is 4K5
interested only in the image of a point-like object. The ia@ |+r
image quality for the unacceptable fields varies significan- R#HVrzOO|T
tly over a lateral region of 12 Airy disk diameters. HA$Xg
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Warning: The MTF results at one or more fields are inaccurate. jh(T?t$&
The mapping between entrance pupil coordinates and exit pupil coordinates DQ<4`wE M
is nonlinear. The nature of the nonlinearity is such that Code V is not M0yv=g
able to compute an accurate MTF result. Usually, this condition is ;6:9 EEd
caused by severe pupil distortion or some discontinuity in the pupil D%L^[|)c\s
coordinate mapping. In all cases where the pupil coordinate mapping y4U|~\]
has sufficient nonlinearity to cause this warning, the imagery is extremely LAkBf
nonstationary (non-isoplanatic) and small changes in object space t W+"/<U
coordinates will cause large changes in the image of a point source. LTxP@pr
Error: The problem described here occurs at the following field(s): "}MP {/
Field: 1 i\<S ;
Field: 2 (n`]
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Field: 3 s_ t/
Field: 4 @^T~W^+
ERROR - For field 4, wavelength 1, rays at the edge of the pupil >"8;8Ev
may be ignored. Check apertures and vignetting for consistency. Z#.1p'3qm1
这个究竟是什么问题呢?好像是和视场有关。求高人指点。