Plot: Many amateur astronomers have large telescopes but Ron Arbour 's observatory, near Winchester, is exceptional; his 16-inch reflector is computer controlled and is programmed to hunt automatically for stellar explosions far across the universe. Patrick Moore visits the observatory to talk to Ron Arbour about his telescope and about his plans for photographing Halley's Comet later this year; during the programme he attempts to get a photograph of the comet specially for The Sky at Night