My brother Eddie Yeadon, who has died aged 82, was an engineer and physicist with a selected curiosity in optics and astronomy.
Within the late Nineteen Sixties he labored within the US for the optics firm Perkin Elmer on the visors for the helmets used within the Apollo 11 moon landings. He additionally designed a reflector left on the moon to “bounce” a laser beam. He usually joked that this was the a part of the mission which didn’t work (though it was used subsequently).
After returning to the UK in 1970, Eddie started work with the electronics firm Mullard. His major focus there was to develop evening gun sights for the Ministry of Defence. This was profitable and his title is on the patent for this merchandise. He subsequently labored on digital printing for Crosfield Electronics (later taken over by De La Rue, and later nonetheless by Fujifilm) in Hemel Hempstead, Hertfordshire, till his retirement in 1997.
Eddie was born in Wrexham, north Wales, the second son of Harry Yeadon, a amount surveyor, and his spouse, Leah (nee Nolan). The household moved to Fife at first of the second world struggle when Harry labored for the Admiralty on the Rosyth naval base.
In 1948, now with two daughters, Mary and me, our household moved to Sheffield, the place Eddie was not allotted a grammar college place. Following a transfer to Manchester quickly after this, the headteacher of Chorlton grammar college agreed to take Eddie in addition to our older brother, George, to keep away from splitting the boys up. Eddie subsequently studied physics on the Manchester Institute of Science and Know-how, and was awarded a PhD.
In 1965 he married Janice Dutnall and the couple moved to Harrogate, Yorkshire, the place Eddie labored for ICI Fibres Division, after which, two years later, to the US.
After retirement, residing in Kingston upon Thames, south-west London, Eddie turned a volunteer on the Royal Observatory Greenwich, and loved guiding teams across the reveals. He co-founded the Flamsteed Astronomy Society for newbie astronomers, and served as its first chairman. Affiliated to the Royal Observatory, it has grown from 24 members to over 400. Eddie additionally undertook Open College programs in geology and meteorology, and loved strolling and music – in his youthful days he took half in Gilbert and Sullivan operas, and gave notably good performances as the main common in The Pirates of Penzance and the lord chancellor in Iolanthe.
Eddie is survived by Janice, their daughters, Anne and Margaret, three grandchildren, and his siblings.