( ( This ( ( is sometimes ) ( referred ( to ( ( ( as ( a ( `` ( Galilean ( '' telescope ) ) ) ) ) , ) ( as ( it ( ( is ( of ( the ( same design ) ) ) ) ( that ( Galileo ( ( used -LRB- ) ( although ( strictly speaking ) ) ) ) ) ) ) ) ) ) ) ) ) ( , ( ( a ( Galilean telescope ) ) ( ( is ( ( ( ( a ( specific kind ) ) ( of refractor ) ) - ) ( one ( with ( ( ( a ( simple ( double-convex ( objective lens ) ) ) ) and ) ( a ( simple ( double-concave ( eye lens ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (NP (DT This)) (VP (VBZ is) (ADVP (RB sometimes)) (VP (VBN referred) (PP (TO to) (NP (NP (RB as) (DT a) (`` ``) (JJ Galilean) ('' '') (NN telescope)) (, ,) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is) (PP (IN of) (NP (DT the) (JJ same) (NN design))) (SBAR (IN that) (S (NP (NNP Galileo)) (VP (VBD used) (-LRB- -LRB-) (SBAR (IN although) (S (ADVP (RB strictly)) (VP (VBG speaking))))))))))))))) (, ,) (NP (DT a) (NNP Galilean) (NN telescope)) (VP (VBZ is) (NP (NP (NP (DT a) (JJ specific) (NN kind)) (PP (IN of) (NP (NN refractor)))) (: -) (NP (NP (CD one)) (PP (IN with) (NP (NP (DT a) (JJ simple) (JJ double-convex) (NN objective) (NN lens)) (CC and) (NP (DT a) (JJ simple) (JJ double-concave) (NN eye) (NN lens))))))) (. .)))
This is sometimes referred to as a &quot;Galilean&quot; telescope, as it is of the same design that Galileo used (although strictly speaking, a Galilean telescope is a specific kind of refractor- one with a simple double-convex objective lens and a simple double-concave eye lens.
(ROOT (S (NP (DT The) (ADJP (RBS most) (JJ common)) (JJ two-lens) (NN telescope)) (, ,) (PP (IN like) (NP (DT the) (JJ simple) (NN microscope))) (, ,) (VP (VBZ uses) (NP (NN convex) (NNS lenses))) (. .)))