DISPLACEMENT ANISOPLANATISM
In the simplest case of displacement anisoplanatism, which was treated in Section
#SR#238>
, the displacement is constant along the propagation direction. The terms to use to find the Strehl ratio are
#math196#
d
(
z
)
=
d
,
(23)
d
2
=
2.91
k
0
2
μ
0
d
2
,
(24)
E
=
6.88
#tex2html_wrap_indisplay1823#
#tex2html_wrap_indisplay1824#
#tex2html_wrap_indisplay1825#
#tex2html_wrap_indisplay1826#
#tex2html_wrap_indisplay1827#
#tex2html_wrap_indisplay1828#,
(25)
σ
#tex2html_wrap_indisplay1830#
2
=
2.91
k
0
2
μ
0
d
5/3
= 6.88
#tex2html_wrap_indisplay1833#
#tex2html_wrap_indisplay1834#
#tex2html_wrap_indisplay1835#.
(26)
The Strehl ratios are plotted in Figs.~
#f5#248>
and ~
#f10#249>
.