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。 Sqfa,3?L
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： S , Oy}Nv
Warning: At least 3 focal positions are recommended for finding best focus 62Jn8DwAT
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. IO,kP`Wcx
Any MTF results are of questionable value for assessing i?|K+ "=D
the image quality, except in those cases where the user is mflI> J=g
interested only in the image of a point-like object. The o@ ;w!'
image quality for the unacceptable fields varies significan- Zwq
u S9
tly over a lateral region of 12 Airy disk diameters. G#l zB`i
Warning: The MTF results at one or more fields are inaccurate. d8Upr1_
The mapping between entrance pupil coordinates and exit pupil coordinates 1eT|
is nonlinear. The nature of the nonlinearity is such that Code V is not d(fgv
able to compute an accurate MTF result. Usually, this condition is t,MK#Ko
caused by severe pupil distortion or some discontinuity in the pupil a>s v
coordinate mapping. In all cases where the pupil coordinate mapping a^ sR?.+3
has sufficient nonlinearity to cause this warning, the imagery is extremely TTqOAo[-Z
nonstationary (non-isoplanatic) and small changes in object space xaS kn
coordinates will cause large changes in the image of a point source. u,oxUySeG
Error: The problem described here occurs at the following field(s): n1$##=wK]
Field: 1 q2,@>#
Field: 2 w*bVBuX s
Field: 3 zBc7bb K
Field: 4 g"zk14'
ERROR - For field 4, wavelength 1, rays at the edge of the pupil /=Xen
mmS
may be ignored. Check apertures and vignetting for consistency. 8 5s{;3
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
