How can I film the sun without damaging the camera?

I have an assignment to make a music video for my TV productions class. For part of it, I wanted to use a time lapse of the sky, but i really don't want to pay to have one of the schools cameras repaird or anything like that. So How can i film in direct sunlight for an extended part of time without damaging anything behind the lens?|||You will need a camera that will accept a Sun Filter.Another thought is to do a time lapse on shadows as the lenghten.|||put sunglasses on itt. =] lol actually i have no idea but good luck