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。 [79iC$8B|
在目镜和物镜分别优化之后，将二者组合在一起时发现Quick 2D能正常显示，但是MTF图线无法显示，有报错，如下： /N7.| XI.
Warning: At least 3 focal positions are recommended for finding best focus CLgfNrW~
Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4. U W' @3#<?
Any MTF results are of questionable value for assessing })umg8s
the image quality, except in those cases where the user is S0w:R:q}L
interested only in the image of a point-like object. The `5
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image quality for the unacceptable fields varies significan- C;I:?4
tly over a lateral region of 12 Airy disk diameters. ows 3%
Warning: The MTF results at one or more fields are inaccurate. Mhu|S) hn
The mapping between entrance pupil coordinates and exit pupil coordinates #<DS-^W!
is nonlinear. The nature of the nonlinearity is such that Code V is not fL~@v-l#~
able to compute an accurate MTF result. Usually, this condition is UIC~%?oIA
caused by severe pupil distortion or some discontinuity in the pupil u$<>8aMei
coordinate mapping. In all cases where the pupil coordinate mapping _)ZxD--Qg
has sufficient nonlinearity to cause this warning, the imagery is extremely DCKH^J
nonstationary (non-isoplanatic) and small changes in object space )1gOO{T]h?
coordinates will cause large changes in the image of a point source. Kh7C7[&
Error: The problem described here occurs at the following field(s): uc
Ph*M
Field: 1 "sYZ3
Field: 2 x7!gmbMfK'
Field: 3 gMs B1 |
Field: 4 TjS & V
ERROR - For field 4, wavelength 1, rays at the edge of the pupil >';UF;\5]Q
may be ignored. Check apertures and vignetting for consistency. ^@f.~4P*I
这个究竟是什么问题呢？好像是和视场有关。求高人指点。
