We should apply the video magnification methods of Bill Freeman (MIT) to the spectacular HST images of expanding star eta Carinae. The motion in the HST images is a bit subtle, but it sure wouldn't be if we fired up the Freeman tricks. One of the cleverest of his tricks is to take the Fourier Transform of each image and then magnify the phase differences. This ensures that the thing being magnified is global and smooth, in some sense. The one respect in which Freeman's methods would have to be generalized is that the data are not from a single, video source: The different images were taken through different filters on different cameras and with different exposure times.
