Related by context. Frequent words. (Click for all words.) 62 X ray telescopes 61 optical wavelengths 61 HiRISE camera 60 collimated 60 interferometric 60 multispectral 60 solar corona 59 visible wavelengths 59 infrared wavelength 59 photometer 59 spectrographs 59 near infrared NIR 59 infrared 59 Millimeter wave 59 LOFAR 59 interferometers 58 x ray imaging 58 ultraviolet wavelengths 58 coronagraph 58 interplanetary spacecraft 58 Laser beams 57 photoluminescence 57 X ray emission 57 diffracted 57 gamma ray 57 tomographic 57 collimator 56 diffraction pattern 56 multibeam 56 X ray 56 WFC3 56 Gamma rays 56 Spectrometers 56 gravitational lens 55 shorter wavelengths 55 Backscatter 55 wavelengths 55 Positron Emission Tomography PET 55 X ray beam 55 X ray beams 55 gamma rays 55 attosecond 55 diffractive 55 panchromatic 55 interferometry 55 infrared wavelengths 55 fluorescence microscope 55 laser 54 spectral imaging 54 Terahertz 54 beam splitter 54 XMM Newton 54 pulsed laser 54 particle beam 54 photometry 54 optical telescopes 54 hyperspectral 54 infrared imaging 54 substorm 54 lasers 54 TerraSAR X 54 ionospheric 54 gravitational wave 53 superlens 53 microwave radiation 53 laser designator 53 VLBA 53 fluoroscopic 53 laser altimeter 53 astronomical objects 53 spaceborne 53 optical microscopy 53 spectroscopic 53 terahertz radiation 53 confocal microscope 53 infrared IR 53 millimeter wave 53 doppler 53 geosynchronous 53 Gamma ray bursts 53 orbiting Hubble Space Telescope 53 Lunar Reconnaissance Orbiter LRO 53 Galaxy Evolution 53 Millimeter Wave 53 optical coherence tomography OCT 53 infrared lasers 53 photometric 53 synthetic aperture radar 52 scintillation 52 InGaAs 52 ionisation 52 x ray 52 infra red 52 radar altimeter 52 fluorescence imaging 52 Computed tomography 52 National Synchrotron Light 52 wavefront 52 VIRTIS 52 multispectral imaging 52 optical coherence tomography