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。 K'Y/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: gc\/A\F<
Warning: At least 3 focal positions are recommended for finding best focus C:AD ZJL
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. C 547})
Any MTF results are of questionable value for assessing 1oc@]0n
the image quality, except in those cases where the user is $Ge0<6/
interested only in the image of a point-like object. The KpBOmXE
image quality for the unacceptable fields varies significan- gvFJ~lL
tly over a lateral region of 12 Airy disk diameters. htT9Hrx
Warning: The MTF results at one or more fields are inaccurate. ;`O9YbP#
The mapping between entrance pupil coordinates and exit pupil coordinates ?y-@c]
is nonlinear. The nature of the nonlinearity is such that Code V is not bf=!\L$
able to compute an accurate MTF result. Usually, this condition is fig~z=m
caused by severe pupil distortion or some discontinuity in the pupil Q45gC28x
coordinate mapping. In all cases where the pupil coordinate mapping **$kWbS
has sufficient nonlinearity to cause this warning, the imagery is extremely ihJ!]#Fbm
nonstationary (non-isoplanatic) and small changes in object space
7 }I';>QH
coordinates will cause large changes in the image of a point source. @SH[<c
Error: The problem described here occurs at the following field(s): $Zr \$z2
Field: 1 M]|]b-#
Field: 2 b<!' WpY-
Field: 3 vz(=3C[
Field: 4 'qUM38 s
ERROR - For field 4, wavelength 1, rays at the edge of the pupil F Uz1P
may be ignored. Check apertures and vignetting for consistency. 9@ 4]t6h[
这个究竟是什么问题呢?好像是和视场有关。求高人指点。