Business-end of the Thompson 26-inch refractor. “Does it have a metal or glass mirror?” (Anon.)

“On yer bike!”

The only star seen all evening.  David observes carefully (Read that how you like!)

Yapp 36-inch reflector.  Secondary mirror

“Aargh.  It moves!”  Anthony demonstrates the lifting floor in Dome D

“It’ll never fly”

Astrographic refractor.  A well-travelled object glass: used in Brazil for the 1919 eclipse (proof of Einstein’s Theory of Relativity), and in Giggleswick for the 1927 eclipse