What effect does a UV filter have on night shots if i may ask? To me it's just UV protected glass.
I prefer to use B+W only. Expenive but good.
A multi-coated filter, of high quality, will mitigate ghost and flaring when shooting at night, but I prefer no filter at all when using my 50mm 1.8 lens. I do have a metal Canon hood threaded onto my 50mm 1.8, which is a pre-Mark II lens.
When I was new to DSLR photography, and shot images at night with a cheap UV filter, there were multiple ghosts, and flaring. Removing the filter solved the problem. When I do use a UV filter, it is multi-coated, Heliopan or B+W.