Related by context. Frequent words. (Click for all words.) 53 binocular 53 eyepiece 51 magnifications 49 WFC3 49 Flyby 49 spectrographs 49 telescopes 48 VIRTIS 48 TerraSAR X 47 eyepieces 47 Imaging Spectroradiometer MODIS 47 multispectral 47 ecliptic 47 magnifying lens 47 HiRISE camera 47 moon Charon 47 binoculars 47 CCD camera 47 fisheye 47 imager 46 lenses 46 Paranal 46 VLBA 46 unaided eye 46 Skywatch 46 #mm lens [002] 46 infrared imagery 46 Lunar eclipse 46 celestial objects 46 Nikkor 46 Bring binoculars 46 interferometric 46 panoramic camera 45 planet Uranus 45 geosynchronous 45 moonrise 45 gravitational lens 45 WFPC2 45 Andromeda Galaxy 45 photometer 45 galaxy NGC 45 5x optical zoom lens 45 asteroid Vesta 45 brightly illuminated 45 flyby 45 visible wavelengths 45 Amateur astronomers 45 Live MOS sensor 45 XMM Newton 45 OSIRIS 45 interferometers 45 ESO Very Large Telescope 45 magnification 45 macro lens 45 telescope 44 laser designator 44 constellations 44 colorimeter 44 microscopic imager 44 MetOp 44 adaptive optics 44 monocular 44 nebulas 44 celestial object 44 3X optical zoom lens 44 infrared 44 stereoscopic images 44 Jupiter moons 44 Carl Zeiss Vario Tessar 44 NASA ESA Hubble 44 interplanetary spacecraft 44 telephoto lens 44 spacecraft orbiting 44 hyperspectral 44 parallax 43 waxing moon 43 COROT 43 Binoculars 43 synthetic aperture radar 43 Jupiter Saturn 43 photometry 43 HRSC 43 SkyScout 43 Moderate Resolution 43 Galileo spacecraft 43 aperture 43 lens 43 #mm #mm [002] 43 FOV 43 Meteor Shower 43 #X zoom 42 cloudy sky 42 NASA Aqua 42 Hubble observations 42 flyby spacecraft 42 Cassini orbiter 42 planets orbiting 42 MODIS 42 astronomical objects 42 Solar Dynamics 42 Perseid Meteor Shower