I live just near the finals for our local airport. Today while in the backyard I saw a Cessna fly overhead for landing, it was a tricycle gear and looked like a 150/152, but may have been a 172. There was a long pole that appeared to be coming out of the tail, although there is a small chance it could have been from the wing on the other side of the aircraft from me. It wasn't very wide in diameter (I couldn't tell even an estimate), was maybe around two-thirds of the length of the aircraft, was painted the same white as the aircraft and capped at the end by a black piece that appeared to be hemispherical.
Does anybody know what this pole could be?