This is very sad news. I met Ron on numerous occasions and he delighted in explaining the aurora, discussing solar observing and monitoring variable stars, mentioning his well-travelled career as a civil engineer – and his distrust of computers! 🙂
He felt that an engineer should be able to solve problems by working from first principles and their professional training, rather than relying on the integrity of a computer program. This philosophy meant that he didn’t use e-mail, but it was nice to receive letters from him.