The power of 5800 suns? Not hardly. It was the power of a couple of square feet of one suns light focused into one point.
Although, I do give him a certain amount of kudos for getting a descent size to his focus point. Could have made it even more efficient by using Post-it Notes to blank out each mirror and ensuring that each was aligned on the exact same spot.
—reminds me of the claim some years ago in one of the “Popular -—” magazines that you could shoot down airliners with a microwave oven-—