This is the only photo taken from the very first astronomical observation instrument that I developed for comets study, back in the 1960s. It was a spectrophotometer used to take profiles of comet heads in various spectral domains, for example remarkable free radicals CN, C2 and C3.
The conception had been made as part of my doctoral thesis, then I built the instrument at IAL Space in Liège and we installed it at the Haute-Provence Observatory near Manosque, France. But the rigid planning of the observatory allowed little observation time for random phenomena such as comets...
Luckily, I received an offer from the Ondřejov Observatory, near Prague, Czech Republic, to move the instrument there, where I worked with Dr Jan Hekela between 1969 and 1974. It was a beautiful time and I was very fortunate to learn about the Czech way of life.
You can see the full size photo on my astronomy blog.
Have fun and stay healthy!