Here is an example
The jetstream is making things very hard for the images to stay still. When I view saturn at high magnification ie greater than 1000x, the rings dance and ripple as the atmosphere moves.
http://maps.wunderground.com//data/640x480/2xau_jt.gif
This resulted in last nights saturn turning out like my attachment below.
I use a 5x powermate which can get to 7.7x and then I also used a feature with my camera to zoom in. I was testing last night and i reckon i am at around 1300x with this one.
I have had one great night in three months where i can say i have been able to use the 5x powermate properly, a handful of nights where it has been ok and the rest of the time, you get mushy images like this one.
As the boys say, at 2x and maybe a bit of zoom, this mushiness won't be visible and you will get sharper images, but the more magnification you start to crave, the times you can use it drop off real quick!