Camera length calibration » History » Revision 3
Revision 2 (Anchi Cheng, 04/29/2020 05:10 PM) → Revision 3/5 (Anchi Cheng, 04/29/2020 06:13 PM)
h1. Camera length calibration 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. * This is only tested on TFS Ceta and Tvips F416 at 2kx2k bin 2 # Send a diffraction tem preset. See [[Setup df preset]] *This should be a square image*. # Select "Camera Length" node # Click "Acquire Image" # Measure the diameter of the ring in pixels. # Click "Ruler" tool to enter the expected d-spacing and measurement, and then click "Calculate" # Multiple measurements can be made with the same preset and the camera length averaged. # Select the camera lengths to be averaged and saved, and save them. Direct Edit and Extrapolation is possible as in Pixel Size Calibrator.