小弟用
CODEV設(shè)計(jì)了一個(gè)開(kāi)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(jué)放大率為12。
[fZhfZ)< 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：
?[!_f$50]P Warning: At least 3 focal positions are recommended for finding best focus
; BmPP, Warning: This system is not isoplanatic at field(s) 1, 2, 3, 4.
UY}EW`$#m Any MTF results are of questionable value for assessing
s^R$u"pFs the image quality, except in those cases where the user is
m8Y>4:Nw interested only in the image of a point-like object. The
i* jnC> image quality for the unacceptable fields varies significan-
UpSa7F:Uw tly over a lateral region of 12 Airy disk diameters.
pJo#7rxd6 Warning: The MTF results at one or more fields are inaccurate.
[U@ ; EeS The mapping between entrance pupil coordinates and exit pupil coordinates
H g04pZupN is nonlinear. The nature of the nonlinearity is such that Code V is not
&ev#C%Nu able to compute an accurate MTF result. Usually, this condition is
JE_ GWgwdv caused by severe pupil distortion or some discontinuity in the pupil
! %/2^ coordinate mapping. In all cases where the pupil coordinate mapping
#B6$ r/% has sufficient nonlinearity to cause this warning, the imagery is extremely
KSve_CBOh nonstationary (non-isoplanatic) and small changes in object space
fi
