What specific lens configuration defined the early Galilean telescope design?
Answer
Convex objective and concave eyepiece
The early Galilean telescope configuration featured a convex lens placed at the front as the objective and a concave lens positioned closer to the eye serving as the eyepiece.
Frequently Asked Questions
What names did Galileo use when referring to his adaptation of the optical instrument?Where did the basic knowledge and technology for combining objective and eyepiece lenses originate before Galileo's refinement?What specific lens configuration defined the early Galilean telescope design?What advantage did the specific Galilean arrangement provide, especially useful for terrestrial observation?How did the Keplerian telescope design contrast with Galileo's regarding its objective and eyepiece lenses?What was the approximate magnification power of the initial Dutch instruments known to Galileo when he first heard of them?What range of magnification did Galileo achieve that fundamentally changed what was visible in astronomy?In which major work did Galileo systematically record his revolutionary astronomical observations starting in 1610?What crucial observation made by Galileo provided direct visual evidence against the established geocentric model?What conclusion was strongly supported by Galileo's observation that Venus exhibited a full cycle of phases, similar to the Moon?