This is indeed sad and shocking news. Without a doubt one of the biggest & most pioneering BAA characters of the past half century. I remember an enjoyable visit to Ron’s observatory in 2004, along with Nick James, Ron Johnson, Maurice Gavin and Glyn Marsh. Horrible to realise that Ron A., Maurice and Glyn have all now departed. Some years ago James Fraser kindly sent me a pristine digital copy of Ron’s 1985 Sky at Night appearance. The link is below, but it does need the volume turning up to the max as Ron was quietly spoken.
https://www.youtube.com/watch?v=87J5FvvtHvE&t=1s
Martin