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。 _w@qr\4i=
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： UEak^Mm;=2
Warning: At least 3 focal positions are recommended for finding best focus @eqeN9e
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. K; FW
Any MTF results are of questionable value for assessing > Oh?%%6
the image quality, except in those cases where the user is O7 ']
interested only in the image of a point-like object. The [6jbgW~E
image quality for the unacceptable fields varies significan- =O|c-k,f@
tly over a lateral region of 12 Airy disk diameters. .@ iFa3
Warning: The MTF results at one or more fields are inaccurate. ck#"*] ,
The mapping between entrance pupil coordinates and exit pupil coordinates -Xz?s
is nonlinear. The nature of the nonlinearity is such that Code V is not `SO|zz|'
able to compute an accurate MTF result. Usually, this condition is =TR,~8Z|
caused by severe pupil distortion or some discontinuity in the pupil eUS
coordinate mapping. In all cases where the pupil coordinate mapping AvR2_
has sufficient nonlinearity to cause this warning, the imagery is extremely l0 *Gb
nonstationary (non-isoplanatic) and small changes in object space -ZW0k@5g
coordinates will cause large changes in the image of a point source. NGYyn`Lx
Error: The problem described here occurs at the following field(s): 7dihVvL
$
Field: 1 \EbbkN :D
Field: 2 F2(q>#<_
Field: 3 ]IJRnVp%
Field: 4 x0a.!
ERROR - For field 4, wavelength 1, rays at the edge of the pupil r%Rs0)$yj
may be ignored. Check apertures and vignetting for consistency. {|9}+
@5Q1
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
