Related by context. Frequent words. (Click for all words.) 63 measurements 55 precise 48 spectra 47 astronomical observations 47 spectroscopic 46 spatial resolution 46 quantitative measurements 46 interferometry 46 Hubble observations 45 tight tolerances 45 astronomical objects 45 WMAP 45 laser pulses 44 distant galaxies 44 spectrometers 44 solar corona 44 optical telescopes 43 spectrometry 43 frequency comb 43 micrometer 43 photometric 43 isotopic 43 infrared spectroscopy 43 ESO Very Large Telescope 43 interferometer 42 measurement 42 Measurements 42 geometries 42 laser scanning 42 XMM Newton 41 chemical composition 41 spectroscopy 41 Remote sensing 41 visualize 41 accurate 41 isotopic composition 41 geo referenced 41 numerical simulations 41 gravitational wave 41 geometry 41 spectrometer 40 spectrophotometers 40 radiometer 40 planetary nebulae 40 radii 40 nanoscale structures 40 isotropic 40 femtosecond 40 protractor 40 lunar soil 40 Metamaterials 40 mathematical calculations 39 telescopes 39 calibration 39 rubidium 39 magnifications 39 solar nebula 39 reproducible 39 kinematic 39 temperature salinity 39 dynamical 39 waveforms 39 x ray crystallography 39 accuracies 39 analyte 39 calibrations 39 mathematical equations 39 surface roughness 39 topological 39 sediment cores 38 calibrate 38 measuring 38 electron density 38 accurately 38 aerosol particles 38 astrophysical 38 repeatability 38 finite element 38 solar irradiance 38 computer simulations 38 stable isotope 38 calculate 38 Cassini 38 geometrical 38 approximations 38 tomography 38 ICESat 38 FT IR 38 diagrams 37 reflectance 37 radiometric 37 GRBs 37 oxygen isotopes 37 geodetic 37 submicron 37 spectrophotometer 37 lidar 37 COROT 37 Keck Observatory 37 spatial 37 Spectrometer