hi there have you spoke with your security light owner ?,that should be your first job ,invite the people round wait for the moon to be half ,get a good ep in and show them,next find a galaxy and get them to put the said light on . the other route is the council make a complaint light to you local council tell them you do not ,want your name mentioned in the letter they send. light pollution is treated the same as any other ie spilt oil ect ring them once a week ,keep om at the council till they do some thing about it and they should if not write to the mp for councils and tell him you are getting no joy with your local council cheers pat