Legendary amateur astonomer John Dobson[0] (1915-2014) founded San Francisco Sidewalk Astronomers and developed the portable, low-cost Newtonian reflector teles

Legendary amateur astonomer John Dobson[0] (1915-2014) founded San Francisco Sidewalk Astronomers and developed the portable, low-cost Newtonian reflector telescope design that bears his name. [0] https://en.wikipedia.org/wiki/John_Dobson_(amateur_astronomer) https://en.wikipedia.org/wiki/John_Dobson_(amateur_astronome...