SpaceFX works fine on iPhone, however, when deploying to an iPad (Mini 4), it crashes due to a very big background image:
new Image(getClass().getResourceAsStream("backgroundL1.jpg"), 700 * BKG_SCALING_FACTOR, 3379 * BKG_SCALING_FACTOR
iPad visual bounds: 768x1004, image size: 781x3769. It is not that big, but it seems there is no enough memory.