Related by context. Frequent words. (Click for all words.) 69 ESO Very Large Telescope 63 Southern Observatory ESO 63 XMM Newton 62 photometry 61 interferometry 61 interferometer 61 Very Large Telescope 60 VLBI 60 La Silla Chile 60 photometer 60 COROT 60 WM Keck Observatory 59 radial velocity 59 Mauna Kea Hawaii 59 VLBA 59 particle detectors 59 infrared telescope 59 spectroscopic 58 microlensing 58 solar corona 58 NICMOS 57 GRB # 57 gravitational wave 57 galaxy cluster 57 Spectrometer 57 spectrometry 57 transmission electron microscope 57 ESO 57 optical telescope 57 supernova remnant 56 frequency comb 56 confocal 56 astronomical observations 56 beamline 56 telescope 56 anisotropy 56 synchrotron radiation 55 hyperspectral 55 Hubble observations 55 Orion Nebula 55 X ray emission 55 extrasolar planet 55 distant galaxy 55 OGLE 55 scanning electron microscope 55 Keck Observatory 55 redshift 55 European Synchrotron Radiation 55 attosecond 55 NASA ESA Hubble 55 IceCube 55 gravitational lensing 55 OSIRIS 55 redshifts 54 optical telescopes 54 CCD camera 54 spectra 54 quasar 54 ESRF 54 particle detector 54 scanning tunneling microscope 54 HRSC 54 auroral 54 astronomical objects 54 numerical simulations 54 infrared spectroscopy 54 optical microscopy 54 celestial object 54 Telescope 54 X ray diffraction 53 optical microscope 53 HD #b [002] 53 transmission electron microscopy 53 occultation 53 Very Large Array 53 WFC3 53 spectrograph 53 Crab Nebula 53 imager 53 Galaxy Evolution 53 radiometer 53 planetary nebula 53 spectrometer 53 globular cluster 53 planetary nebulae 53 magnetar 53 LCLS 53 crystallographic 53 visible wavelengths 53 infrared radiation 52 telescopes 52 quasars 52 X ray Observatory 52 SPIRE 52 astronomers 52 Gemini Observatory 52 Voyager spacecraft 52 astronomical observatory 52 keV 52 photometric 52 gamma ray