Related by context. Frequent words. (Click for all words.) 62 ESO Very Large Telescope 59 interferometric 58 Very Large Telescope 58 spectrographs 58 La Silla Chile 57 photometer 57 interferometer 56 photometry 55 interferometers 54 CCD camera 54 optical wavelengths 54 #.#μm [001] 53 confocal 53 photodetector 53 millivolts 52 particle detectors 52 keV 52 interferometry 52 visible wavelengths 52 parallax 52 magnifications 51 Spectrometer 51 frequency comb 51 WM Keck Observatory 51 attosecond 51 #.#x optical zoom [001] 51 spatial resolution 51 redshift 51 radiometer 51 photodiodes 51 #KHz [001] 50 picosecond 50 MeV 50 WFC3 50 redshifts 50 photometric 50 optical telescope 50 z = 50 beamline 50 transmissive 50 VLBI 50 diffractive 50 #.#nm [001] 49 megapixel CCD sensor 49 NICMOS 49 optical microscopy 49 COROT 49 XMM Newton 49 solar corona 49 adaptive optics 49 collimator 49 cd m 49 brightness 49 diametre 49 tesla 49 VLBA 49 #mm #mm [002] 49 ultrasonic sensors 49 GeV 49 multispectral 49 infrared wavelengths 49 optical telescopes 49 laser pulses 49 spectroscopic 48 f#.# 48 femtoseconds 48 dipole 48 imager 48 optical microscopes 48 picoseconds 48 angstroms 48 Adaptive Optics 48 aperture 48 particle detector 48 InGaAs 48 m 48 mm ² 48 Downlink 47 occultation 47 photonic crystal 47 VLT 47 auroral 47 Keck Observatory 47 diffraction 47 Cepheids 47 femtosecond 47 amplitudes 47 micrometer 47 F#.# [001] 47 Southern Observatory ESO 47 - -Schwenkler 47 near infrared NIR 47 Cosmic Origins Spectrograph 47 transmittance 47 apertures 47 geoid 47 radial velocity 47 μm 47 WFPC2 47 wavelengths 47 waveguides