ULPT Request: How to stop neighbors light from shining in my yard

I am a big fan of astronomy and am getting into astrophotography. My back yard is a great large/open spot for this. The only problem is that my neighbors have a very bright light mounted high in their yard pointed almost directly at mine. This light pollution ruins observing at home for me.

There is a bit of tension/rivalry between us so kindly asking them to redirect the light is off the table. They're the blaring shitty music at 8am type, so they're not very concerned about how others feel.

I've considered shooting it out with a bb gun, but it's made of plastic. So when they notice that it's not working, there would likely be a hole in it pointing right at my yard, which wouldn't be the best look for me.

Any suggestions?