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. Author manuscript; available in PMC: 2013 Aug 13.
Published in final edited form as: Ultramicroscopy. 2010 Oct 26;111(2):90–100. doi: 10.1016/j.ultramic.2010.10.010

Fig. 7.

Fig. 7

Fourier transform of a 39,000× magnification image recorded at 300keV on FEI Polara showing amplitudes, from an 6000 × 6000 area digitized in 2μm steps, of a paraffin crystal (A02030) on thick carbon, with the specimen at liquid nitrogen temperature. This is the background-subtracted and slightly sharpened FFT of the raw, digitized image - i.e. no unbending was applied in order to sharpen the spots and thus improve the detectable resolution. Diffraction spots are visible out to 1.5 Å resolution, which is best appreciated in the inset that shows the three highest resolution spots. See also Table 2.