Hi there, yes you can use CSS to choose when the slider displays depending on the screen width. You can find all the sizes for ipad screens here – http://stephen.io/mediaqueries/

Leave the slider switched on for mobile views in the admin and use the css below (tweak the px width to fit) to hide on the mobile only, leaving it visible on the ipad.

@media only screen
and (min-device-width : 375px)
and (max-device-width : 667px) {
#slider {
display: none;
}
}