Toad, Astronomer The Wind in the Willows : Season 3 Episode 4

Toad has taken up an interest in stargazing, in anticipation of the return of Halley's Comet. Naturally then, he has bought a telescope at, as Badger puts it, "an astronomical price". Having managed, with some difficulty, to get it onto the roof of Toad Hall, Mole and Rat leave Toad to his observations, and as night falls he spots a moving light which he assumes to be the comet. Little does he realise that the weasels are creeping about with a torch, and suddenly his ladder disappears, leaving him stranded on the roof. Rescue and explanations follow in the morning.