title: The correction of electron lens aberrations.
abstract: The progress of electron lens aberration correction from about 1990 onwards is chronicled. Reasonably complete lists of publications on this and related topics are appended. A present for Max Haider and Ondrej Krivanek in the year of their 65th birthdays. By a happy coincidence, this review was completed in the year that both Max Haider and Ondrej Krivanek reached the age of 65. It is a pleasure to dedicate it to the two leading actors in the saga of aberration corrector design and construction. They would both wish to associate their colleagues with such a tribute but it is the names of Haider and Krivanek (not forgetting Joachim Zach) that will remain in the annals of electron optics, next to that of Harald Rose. I am proud to know that both regard me as a friend as well as a colleague.
authors.affiliation: CEMES-CNRS, B.P. 94347, 31055 Toulouse cedex, France. Electronic address: peter.hawkes@cemes.fr.
authors.forename: P W
authors.initials: PW
authors.lastname: Hawkes
keywords: CEOS; Electron lens aberration correction; Nion; Quadrupoles; Scanning transmission electron microscope (STEM); Sextupoles; Transmission electron microscope (TEM)