[3dem] FFT question
Garry P Morgan
Garry.Morgan at Colorado.EDU
Fri Dec 29 11:23:54 PST 2017
Hi,
we’re getting consistently clipped FFT’s on our TF30…the attached image is from a 50-frame, summed/aligned image of the carbon (of a cryo-grid). the drift numbers are reasonably low, there is no astigmatism. just wondering if any of you can provide a possible explanation of this? it definitely looks like drift or some sort of movement, right? we have 2 Gatan 626 holders, and it seems to only be happening with one of the holders…has anyone encountered a problem like this associated with a holder?
thanks,
Garry
[unknown.jpg]
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