Example image of eyePlorer eyePlorer map for 'Newtonian telescope': Isaac Newton Primary mirror Reflecting telescope 1668 Newton's reflector Amateur telescope making Galileo Galilei Giovanni Francesco Sagredo Niccolò Zucchi Objective (optics) James Gregory (mathematician) Parabola Spectrum White Alloy Copper Speculum metal Tin Eyepiece Telescope mount Galilean moons Jupiter Phases of Venus Isaac Barrow Royal Society Charles II Tarnish John Hadley Paraboloid Aerial telescope Chromatic aberration Cassegrain reflector Figuring Gregorian telescope Achromatic lens F-number Ratio Coma (optics) Aperture Focal length Linear Radian Diffraction Side lobe Collimated light Maksutov telescope Curved mirror Spherical aberration Equatorial mount Ladder
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