Related by context. Frequent words. (Click for all words.) 63 photometer 61 spectrographs 61 photometry 59 interferometers 57 photometric 57 optical microscopes 57 XMM Newton 57 spectroscopic 57 near infrared NIR 56 optical wavelengths 56 redshifts 56 visible wavelengths 56 optical microscopy 56 Spectrometer 56 solar corona 55 fluorophores 55 frequency comb 55 ultraviolet wavelengths 55 shorter wavelengths 55 ionisation 55 infrared wavelengths 55 interferometric 55 interferometry 55 Gamma ray bursts 55 spectrometers 55 elemental composition 54 Earthlike 54 cryogenic temperatures 54 NICMOS 54 active galactic nuclei 54 Raman spectroscopy 54 Fluorescence 54 FRET 54 Cepheids 54 X ray beams 54 particle detectors 54 Type Ia supernovae 54 reflectance 54 Conductivity 54 AFMs 54 spectrometry 54 infrared spectroscopy 53 GRBs 53 radiometer 53 -# degrees Fahrenheit [002] 53 photonic crystal 53 dispersive 53 redshift 53 Gamma rays 53 spectra 53 X ray beam 53 magnetar 53 PZT 53 radial velocity 53 interferometer 53 fluorescent probes 52 X ray emission 52 pulsed laser 52 Hubble observations 52 geoid 52 gravitational wave 52 radar altimeter 52 SQUID 52 planetary nebulae 52 magnifications 52 FT IR 52 X ray fluorescence 52 optical telescopes 52 brown dwarfs 52 electron beams 52 astrophysical 52 confocal 52 astronomical objects 52 spectroscopy 52 quasars 52 quantitative measurements 52 spectrometer 52 quadrupole 52 MALDI 51 alpha particles 51 WFC3 51 multispectral 51 extrasolar planet 51 photoluminescence 51 infrared radiation 51 Live MOS sensor 51 Tunable 51 spectrally 51 extrasolar planets 51 muons 51 laser pulses 51 microwave frequencies 51 keV 51 gas chromatograph 51 -# degrees Celsius [001] 51 SIRTF 51 STIS 51 spectrophotometer 51 photonic crystals 51 spectrophotometers 51 confocal microscopy