Hello,
the use of an UV-filter is recommended only: 1) with older lenses with only single or without any coating, 2) with lenses with only 3 or 4 lenses, 3) if you are in high areas above sea level, I think over 3000 mtr. 4) in bright sunshine at sea, 5) to protect the front lens.
Every filter is a plane-parallel plate, the designer of the lens has not calculated in his design and the image quality (theoretically) will be worse than without filter, especially the sensitivity for flare and reflexes is enhanced, therefore you never should use a filter for night-shots.