150 inch telescope › Forums › History › Theodorus Blethyn › 150 inch telescope 15 February 2021 at 12:59 pm #583852 Roy HughesParticipant No new information I’m afraid. But his 150 inch (fl) telescope pictured in the online catalogue of the British Optical Association Museum is truly the stangest thing I’ve come across in a long time. Good luck in your hunt. Roy
