Decided to test out this profiling method that Ian and I posted the other day. This is an example of the output of my script that gives the waist size in x and y direction. I also modified ian's script to calculate the beam waist size and location using a series of images. From the script he linked, pay special attention to the path and distances when naming your beam picture files. Also make sure you set the pixel size to 5.0 um or the results will be inaccurate (this is the 5.6 number in the line: y_waist.append(waist[jj][3]*5.6). Here is the result of this process. The fit works quite wiell, but there is a big enough difference in answer from the beam profiler to warrent some investigation between the two. Things have been moved around since the last time we used the profiler so I plan on borrowing the profiler after lunch if its available to make a direct comparison between the two, and potentially calibrate between the two. If you want to try this for your self the data is in "Nextcloud\GQuEST\B102\Output Filter Cavity\Profiling_with_Camera\Test_profile_with_camera".