Skip to main content
. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Ultramicroscopy. 2013 Jan 29;133:10.1016/j.ultramic.2013.01.003. doi: 10.1016/j.ultramic.2013.01.003

Figure 2.

Figure 2

Examples of azimuthally averaged power spectra of empty images that have been normalized by N, the total number of electrons in a given image. Only three examples are shown here for simplicity. Corresponding figures for other cameras are shown in the Supplemental material. Red curve: TVIPS F416 camera, 120 keV electrons; green curve: Gatan US4000 camera, 200 keV electrons; blue curve: Gatan K2 camera, 300 keV electrons.