I'm going to have to visit that Facebook group, it sounds interesting. It's fascinating what people can accomplish without much money or high-end equipment. I've seen the space station whirling by while I was up on the North Shore of Minnesota. There's almost zero light pollution up there and it is incredible all you can see. Once, in the late 90's, I tent was camping near Grand Portage and we saw three points of light very high up (maybe in the stratosphere?) performing unbelievable maneuvers. They would be stationary and then suddenly zip what must've been hundreds of miles in just a matter of seconds. It was a sight to see.