I really like the second image of the second lot of images. Very nice and smooth. Lots of detail present too.
Actually, while f50 is not often used on Jupiter, there are a few chaps using it on Mars in the Northern hemisphere. I could not do f50 myself as the image scale would be far too large. Using a 2x with the filter wheel provides an image scale with just 20 pixels top and bottom when imaging Jupiter. I do wonder though how you are getting enough light onto the sensor.