The effect of random longitudinal motion of an image is discussed. Numerical results are given for systems with circular and annular pupils. It is shown that, for a given value of the image motion, the time-averaged Strehl ratio is larger for a larger value of the obscuration ratio of an annular pupil. We also show that the time-averaged image irradiance distribution near its center and the corresponding encircled power can be obtained from their aberration-free values by multiplying them by the Strehl ratio.
© 2007 Optical Society of America
Original Manuscript: December 12, 2006
Revised Manuscript: February 26, 2007
Manuscript Accepted: March 14, 2007
Published: May 31, 2007
Virendra N. Mahajan, "Degradation of an image by Gaussian longitudinal motion," Appl. Opt. 46, 3700-3705 (2007)