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。 B 3eNvUFZg
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: (<yQA. M
Warning: At least 3 focal positions are recommended for finding best focus IUy5=Sl
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. t<qXXQ&5
Any MTF results are of questionable value for assessing KkZ o|\V
the image quality, except in those cases where the user is %[m%QP1;p
interested only in the image of a point-like object. The `{\10j*B
image quality for the unacceptable fields varies significan- ":^cb =
tly over a lateral region of 12 Airy disk diameters. ;7yt,b5&C
Warning: The MTF results at one or more fields are inaccurate. V[">SiOg
The mapping between entrance pupil coordinates and exit pupil coordinates -KCQ!0\F
is nonlinear. The nature of the nonlinearity is such that Code V is not ptpu
u=3"
able to compute an accurate MTF result. Usually, this condition is oz?6$oE(bt
caused by severe pupil distortion or some discontinuity in the pupil _lG\_6oJ,
coordinate mapping. In all cases where the pupil coordinate mapping jF%l\$)/
has sufficient nonlinearity to cause this warning, the imagery is extremely +|Qe/8Q
nonstationary (non-isoplanatic) and small changes in object space -MeO|HWm
coordinates will cause large changes in the image of a point source. y7#vH<
Error: The problem described here occurs at the following field(s): FuO'%3;c
Field: 1
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Field: 2 xw rleB
Field: 3 +tFl
Field: 4 B ? D|B
ERROR - For field 4, wavelength 1, rays at the edge of the pupil e@L7p,
may be ignored. Check apertures and vignetting for consistency. 3Y=?~!,Jk
这个究竟是什么问题呢?好像是和视场有关。求高人指点。