1564-1642 17thcentury adaptive antennas(electronics) astronomicalinstruments astronomicalobservatories astronomy astronomyprojects astrophysics automaticcontrol beamoptics ccdcameras coherence(optics) computernetworks congresses conics conicsections constellations controltheory cosmology designandconstruction do-it-yourselfwork europe evolution experiments exploration extraterrestrialenvironment focalplanes galaxies galilei galileo history hubble-weltraumteleskop hubblespacetelescope(spacecraft) imagequality imagingsystems imagingsystemsinastronomy infraredastronomy instruments interferometers interferometry juvenileliterature knowledge largeastronomicaltelescopes lasers laserspectroscopy lenses location mathematicalmodels meteors mirrors numberconcept observers'manuals opticaldetectors opticalinstruments opticalmeasurements opticalproperties opticalspectrometers optics orbitingastronomicalobservatories planets popularworks prisms quasars radioastronomy redshift reflection(optics) refraction remotesensing resolution(optics) science scientificsatellites solaratmosphere spaceastronomy spacecraft spacesurveillance spacetelescopes spectrumanalysis spherical stars structuraldynamics ta1522t994i2000 technologicalinnovations verylargearraytelescopes wavelengths