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。 L-9;" ]d~|
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： ?@kz`BY
Warning: At least 3 focal positions are recommended for finding best focus 3Tp8t6*nL
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. ]2 YC7
Any MTF results are of questionable value for assessing +SW|/oIU
the image quality, except in those cases where the user is \v$ zU
interested only in the image of a point-like object. The +KWO`WR
image quality for the unacceptable fields varies significan- LROrhO
tly over a lateral region of 12 Airy disk diameters. kDxI7$]E
Warning: The MTF results at one or more fields are inaccurate. 4wGBB{X
The mapping between entrance pupil coordinates and exit pupil coordinates lCBH3-0^
is nonlinear. The nature of the nonlinearity is such that Code V is not e+:X%a4\
able to compute an accurate MTF result. Usually, this condition is |WSpWsr,
caused by severe pupil distortion or some discontinuity in the pupil ?GqH/
(O
coordinate mapping. In all cases where the pupil coordinate mapping Y88N*axDW.
has sufficient nonlinearity to cause this warning, the imagery is extremely ii>^ ]iT
nonstationary (non-isoplanatic) and small changes in object space yE(< F 2
coordinates will cause large changes in the image of a point source. 0C\cM92o
Error: The problem described here occurs at the following field(s): esq~Ehr=
Field: 1 xxr'g =
Field: 2 6y57m;JW/
Field: 3 Qwve-[
Field: 4 +5 gX6V\
ERROR - For field 4, wavelength 1, rays at the edge of the pupil
n_k`L(8*
may be ignored. Check apertures and vignetting for consistency. `Q# )N0
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
