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。 Qq7%{`< }
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： ZBY*C;[)*P
Warning: At least 3 focal positions are recommended for finding best focus P*
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Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. 6x*$/1'M3;
Any MTF results are of questionable value for assessing jx=5E6(h
the image quality, except in those cases where the user is a62'\wF>D
interested only in the image of a point-like object. The yhPO$L
image quality for the unacceptable fields varies significan- .`ZuUr
tly over a lateral region of 12 Airy disk diameters. @r130eLh
Warning: The MTF results at one or more fields are inaccurate. #qnK nxD
The mapping between entrance pupil coordinates and exit pupil coordinates 7=wPd4
is nonlinear. The nature of the nonlinearity is such that Code V is not q2{Aq[
able to compute an accurate MTF result. Usually, this condition is vB?(|
caused by severe pupil distortion or some discontinuity in the pupil 7;8DKY q
coordinate mapping. In all cases where the pupil coordinate mapping nSSj&q- O
has sufficient nonlinearity to cause this warning, the imagery is extremely S Bo i|
nonstationary (non-isoplanatic) and small changes in object space bxc!x>)
coordinates will cause large changes in the image of a point source. R9q9cB i3
Error: The problem described here occurs at the following field(s): Dug{)h_2
Field: 1 NScUlR"nE
Field: 2 Z@ dS,M*
Field: 3 n/ CP2 A
Field: 4 kJ_XG;8
ERROR - For field 4, wavelength 1, rays at the edge of the pupil }i F|NI V
may be ignored. Check apertures and vignetting for consistency. BD_"w]bqD
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
