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That looks like a processed image, it wouldn't have been taken with an eyepiece, usually video footage is taken with a camera that takes the place of the eyepiece and hundred of frames split out to process into one photo. It probably had a ton of black space cropped out of the image too. I think when you capture this way the camera gives you approximately the magnification of a 5mm eyepiece.
Again I doubt they saw saturn like that with an eyepiece or even in the video capture. Imagine water running down your monitor screen while you look at the picture and thats close to what you see live which is the atmospheric distortion. Takes a LOT of single frames to combine and process with wavelets to bring out the details. Again end user expectations. Go to a local astronomers club night and look through scopes people bring and you'll see for yourself what you actually get to see through setups of various sizes and budgets.
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