Jupiter is the largest planet in the Solar System and a great observing target, look out for the Great Red Spot, the four Gallean moons, transits of the moons and their shadows across the surface of Jupiter.
Almost any telescope or binoculas will allow you to see that Jupiter is a disk, and see the 4 main moons orbiting around the planet, and only modest telescopes are needed to see the bands and zones and some of the changing features on the surface and transits of shaddows and moons across the disk.
You can improve the contrast of some features on Jupiter with the use of filters, however some will block a lot of light so may require a larger telescope.
Wratten #8 (Light Yellow) Improves contrast of the belts and zones.
Wratten #21 (Orange) Improves contrast around the edges of the equitorial belts
Wratten 25A (Red) Improves festoons (bluish clouds) on Jupiter
Wratten 38A (Dark Blue) Improves the Great Red Spot and main equitorial belts
Wratten 58 (Green) Improves polar regions
IR Pass Useful if imaging with a CCD or webcam to steady the seeing and increase contrast.
All images are copyright. Permission must be sought to from the image owner to the use of any of these images.