Thank you for that, Joachim.
Amazing you found it.
It must have been 1966, and I was offered the binocular first by Arthur Frank, owner of Charles Frank, Glasgow.
He had one of the world's finest collections of historic optics, that were sold by auction when he moved to Jersey.
A a company rep I visited Glasgow frequently.
I begged him to make an 8.5 inch Newtonian as he only made 6 inch versions.
He made me the first one, £220 retail, but he charged me £180.
It took a year to make, and I got it in 1967 and collected it by car
As it turned out the primary was faulty and Dudley Fuller gave me a first class mirror totally free of charge.
He was a jazz pianist turned telescope maker.
In 1969 the 8.5 inch f/6 scope was in Helsinki observatory for a year with a brick to increase the angle by 9 degrees.
I had almost half a ton of stuff in my winterised Austin 1800 with pumped up hydrolastic suspension.
The car was fine at minus 30C.
I observed all night at minus 15C and for an hour at minus 25C.
Arthur Frank sold me a 10x70 Ross monocular from his collection.
People nowadays don't realise how difficult it was to get optics then.
The Keele observatory camera may contain a Dallmeyer 36 inch f/6.3 lens.
I had many and they varied tremendously in quality.
A few were hand aspherised, and a few coated.
They had spherical aberration that cleared at f/8.7.
Actually they weren't that good, but used yellow or red filters. Usually at f/11. there were three interchangeable shutters with different speeds.
Some of the filters contain uranium.
They were used on Williamson F52s. 8.5 inch x 7 inch film from memory.
There were also TTH 48inch f/8 and Ross 50 inch f/8 and 60 inch f/8 lenses.
The Zeiss cameras used Zeiss Telikon 75cm f/ 6.3 lenses with internal venetian blind shutters. Incredibly good quality, 30cm x 30cm format pressure backs.
Also 50cm Aero Tessar and 20cm wide angle 4 element lenses.
There are some of these survey cameras in the Science museum.
I had three of these cameras well used I gave one to a friend.
The Wray 36inch f/4 lenses were huge.
They were used for night photography.
Opticians bought these for £50 ex gov and took out the high quality 9.5 inch front lenses and reshaped them into long focus objectives.
Creative design in large scale optics surely has lots of antecedents. What surprises me is that while the optics have become vastly more affordable, the mounts are largely unchanged, still as bulky and as heavy as ever. Solving that problem may be more beneficial to the sector than some gradual escalation in objective diameters.