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。 D[jPz 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： \7V[G6'{
Warning: At least 3 focal positions are recommended for finding best focus &VPfI
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. ATRB9
Any MTF results are of questionable value for assessing o?,c#g
the image quality, except in those cases where the user is x*'2% 3C~
interested only in the image of a point-like object. The m>FP&~2
image quality for the unacceptable fields varies significan- \wR;N/tg
tly over a lateral region of 12 Airy disk diameters. Jb;@'o6
Warning: The MTF results at one or more fields are inaccurate. Wf!u?nH.5
The mapping between entrance pupil coordinates and exit pupil coordinates !kW~s_gUb*
is nonlinear. The nature of the nonlinearity is such that Code V is not !8Y $}
able to compute an accurate MTF result. Usually, this condition is qtR/ K=^i
caused by severe pupil distortion or some discontinuity in the pupil F:~k4uTW\b
coordinate mapping. In all cases where the pupil coordinate mapping }'`iJ b\
has sufficient nonlinearity to cause this warning, the imagery is extremely Q3 0T R
nonstationary (non-isoplanatic) and small changes in object space T)#e=WcP]
coordinates will cause large changes in the image of a point source. mXwDB)O{)
Error: The problem described here occurs at the following field(s): )BeB xo7lv
Field: 1 [gaB}aLn
Field: 2 $Wn!vbL
Field: 3 bHRRgR`,
Field: 4 =G\N1E
ERROR - For field 4, wavelength 1, rays at the edge of the pupil 7`J= PG$A
may be ignored. Check apertures and vignetting for consistency. (z.4er}o
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
