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<div dir="auto">Hi Garry
<div dir="auto"><br>
<div dir="auto">We had the same problem on our F20 with 626 holders. There were two sources of vibration. One was the K2 processing unit, which was at that time in the F20 room. The second source was the chiller. Connecting to another chiller finally solved
the problem.</div>
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<div dir="auto">Best </div>
<div dir="auto">Nadav </div>
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<div>-------- הודעה מקורית --------</div>
<div>מאת: 3dem-request@ncmir.ucsd.edu </div>
<div>תאריך: 29.12.2017 21:25 (GMT+02:00) </div>
<div>אל: 3dem@ncmir.ucsd.edu </div>
<div>נושא: 3dem Digest, Vol 124, Issue 39 </div>
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Today's Topics:<br>
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1. FFT question (Garry P Morgan)<br>
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Message: 1<br>
Date: Fri, 29 Dec 2017 19:23:54 +0000<br>
From: Garry P Morgan <Garry.Morgan@Colorado.EDU><br>
To: "3dem@ncmir.ucsd.edu" <3dem@ncmir.ucsd.edu><br>
Subject: [3dem] FFT question<br>
Message-ID: <D54771D8-1D6A-4C65-871D-8E91B1ADFB57@colorado.edu><br>
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Hi,<br>
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?<br>
thanks,<br>
Garry<br>
<br>
[unknown.jpg]<br>
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