I want to know the answer to the following question:
Who set up an astronomical observatory on Saint Helena?
All the background I'm provided with is that "On leaving the University of Oxford, in 1676, Edmond Halley visited Saint Helena and set up an astronomical observatory with a 7.3-metre-long (24 ft) aerial telescope with the intention of studying stars from the Southern Hemisphere.". Is that enough to answer the question?
Answer: yes