i remember talking about how your last BP died with you...did you wash everything that is being reused with this one really throughly?
as far as stargazing, i would not worry too much right now. in fact i just walked upstairs to check on my snakes and my female was staring straight up. snakes will do this sometimes, they could be looking at something you dont know is there, or the heat lamp if you have one. one good way to figure out if it has a neurogical problem would be to take the snake, and flip it on its back. it should right itself immediatly.