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。 _6C,w`[[6
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： iayxN5,
Warning: At least 3 focal positions are recommended for finding best focus H;RgYu2J
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. WRN}>]Ng Q
Any MTF results are of questionable value for assessing ;f2<vp;U
the image quality, except in those cases where the user is M.KXDD#O
interested only in the image of a point-like object. The >RKepV(X7
image quality for the unacceptable fields varies significan- G/V0Yn""
tly over a lateral region of 12 Airy disk diameters. r+}<]?aT>-
Warning: The MTF results at one or more fields are inaccurate. 910N 1E
The mapping between entrance pupil coordinates and exit pupil coordinates RzqU`<//
is nonlinear. The nature of the nonlinearity is such that Code V is not N1X;&qZDd
able to compute an accurate MTF result. Usually, this condition is }62Q{>`
caused by severe pupil distortion or some discontinuity in the pupil #,rP1#?
coordinate mapping. In all cases where the pupil coordinate mapping p *GAs
C
has sufficient nonlinearity to cause this warning, the imagery is extremely P;p ;o]
nonstationary (non-isoplanatic) and small changes in object space 4j~WrdI*
coordinates will cause large changes in the image of a point source. 9, 0}}3J
Error: The problem described here occurs at the following field(s): M s=11C
Field: 1 xO;Qr.3PX
Field: 2 "S3U]zw0_
Field: 3 BHZSc(-o
Field: 4 seNH/pRb
ERROR - For field 4, wavelength 1, rays at the edge of the pupil FO?I}G22
may be ignored. Check apertures and vignetting for consistency. =B
ts
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
