I have a question about lightning. My observatory has the wiring with wall plugs, but I use 2 extension cords to power those wall plugs. When I'm through observing for the night I unplug the extension cords and put them away. If lightning were to hit nearby or even directly onto the obs, would the equipment plugged into the unpowered wall plugs be vulnerable? It sounds like the equipment doesn't even have to be plugged in to be in danger. If that's so, how does one really protect their equipment?