My father was a machinist. For many years he worked for my grandfather, Algot Larson who invented the Unique window balance, a device that replaced the ropes and pulleys that were used at the time to open and shut windows. My father's avocation was astronomy. He was a member of the Amateur Astronomer's Association. He often attended meetings at the Hayden Planetarium in New York City where he learned to make his own telescope grinding the lens himself.  I remember him melting…