Dublin astronomer finds third supernova with self-made telescope

An amateur astronomer with an eye for exploding stars in the night sky has celebrated the latest celestial discovery from his back garden with a cup of tea.

Dave Grennan, 42, hit the jackpot in the heavens over his suburban Dublin home on Good Friday using a telescope he built himself which picked up a 170 million-year-old dying sun 100 times the size of ours.