Not seeing a larger, more detailed image w/ Bushnell 78-8850.
Currently the rings of Saturn are nearly edge on so you won't see any details in them. Shortly the rings will appear edge on and the ring will disappear completely for a few months. Gradually, they will return and angle more towards Earth at which time you will be able to see some of the ring details.
There are many factors that can reduce your ability to see planetary detail. I had my Celestron 200mm out the other night looking at Saturn but saw no details because the atmosphere was too unstable. There are also limits to what a telescope can realistically view.
There is a general rule of thumb that states you can expect to view 50x per inch of aperture. Your telescope has roughly 5" of aperture. 5 times 50 equals a maximum of 250x. However, this is a guideline. On bad nights like I had you'll never reach that 250x since objects will appear blurry or unstable. On good nights, you can exceed this.
You can calculate your telescope power by dividing your telescope focal length by the focal length of the eyepiece ( that 4,9,20mm number).
An excellent object to look at when it comes back in view is Jupiter. It's always interesting and you can see four of it's moons.
Good luck and clear skies.
-jodair
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