Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The mean error in the position of the origin measured as a function of the effective pixel size, a. The theoretical data was obtained using a computational model for photon and instrument noise, and the mean was calculated from a sequence of 100 different profiles for the PSF (see fig. 7 caption for more details).
