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Camera length calibration » History » Version 2

Anchi Cheng, 04/29/2020 05:10 PM

1 1 Anchi Cheng
h1. Camera length calibration
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Camera length calibration can be simply done by acquiring a diffraction image of cross-grating replica and enter the expected d-spacing of Au-Pd power rings and measure the diameter of the ring in Leginon gui.
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* This is only tested on TFS Ceta and Tvips F416 at 2kx2k bin 2
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# Send a diffraction tem preset. *This should be a square image*.
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# Select "Camera Length" node
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# Click "Acquire Image"
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# Measure the diameter of the ring in pixels.
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# Click "Ruler" tool to enter the expected d-spacing and measurement, and then click "Calculate"
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# Multiple measurements can be made with the same preset and the camera length averaged.
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# Select the camera lengths to be averaged and saved, and save them.
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Direct Edit and Extrapolation is possible as in Pixel Size Calibrator.
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