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. Author manuscript; available in PMC: 2008 Sep 30.
Published in final edited form as: J Struct Biol. 2006 Nov 3;157(1):148–155. doi: 10.1016/j.jsb.2006.10.026

Fig. 4.

Fig. 4

Cross correlation of focusing images at the tilted position. (A and B) Images acquired at a stage tilt angle of 60°. The beam was tilted along the tilt axis by 3 mrad. (C) Phase weighted cross correlation of the two images; the peak is highlighted with a circle. The images were acquired with a 0.05 s exposure at 29,000× magnification, and 4× binned to 1024 × 1024 pixels.