FYI, you can see Jupiter's moons with binoculars. I use a 10x50 binocular, the 4 Galilean moons appear as points of light. This past June during Jupiter opposition, Jupiter was close enough to Earth where my 90-mm refractor at 200x resolved Ganymede and Io moons during transits as well as my 10-inch at higher power too. However, this is not the norm due to Jupiter's distance from Earth. The June opposition, Jupiter came close enough to Earth for various telescope observers to see some of the Moons - as small, round shape moons.