小弟用CODEV設(shè)計(jì)了一個(gè)開普勒望遠(yuǎn)鏡。目鏡用的是對(duì)稱式，物鏡用了一個(gè)雙膠合，視覺放大率為12。 zkt~[-jm}  
在目鏡和物鏡分別優(yōu)化之后，將二者組合在一起時(shí)發(fā)現(xiàn)Quick 2D能正常顯示，但是MTF圖線無(wú)法顯示，有報(bào)錯(cuò)，如下： Jq1oQu|rs  
Warning: At least 3 focal positions are recommended for finding best focus TjpyU:R,&|  
Warning: This system is not isoplanatic at field(s)  1, 2, 3, 4. /G5KNSi  
               Any MTF results are of questionable value for assessing Z%#e* O0  
               the image quality, except in those cases where the user is =K@LEZZ'/<  
               interested only in the image of a point-like object.  The E2Sj IR}  
               image quality for the unacceptable fields varies significan- 4n#u?)  
               tly over a lateral region of 12 Airy disk diameters. mjOxmwo  
Warning: The MTF results at one or more fields are inaccurate. Ioe.[&o6B  
               The mapping between entrance pupil coordinates and exit pupil coordinates 'q}Ud10
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               is nonlinear.  The nature of the nonlinearity is such that Code V is not mB2}(DbhE  
               able to compute an accurate MTF result.  Usually, this condition is 5REH`-  
               caused by severe pupil distortion or some discontinuity in the pupil Eq@sU?j  
               coordinate mapping.  In all cases where the pupil coordinate mapping _Q:ot'(~0-  
               has sufficient nonlinearity to cause this warning, the imagery is extremely -cUW,>E  
               nonstationary (non-isoplanatic) and small changes in object space {F_>cyR  
               coordinates will cause large changes in the image of a point source. $7X;FmlG&  
Error: The problem described here occurs at the following field(s): +sJ{9#