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(Click for frequent words.) 59 Ritchey Chrétien 58 Schmidt Cassegrain telescope 54 inch refractor 54 inch Schmidt Cassegrain 53 Dobsonian 53 Refractor 52 Ritchey Chretien 52 Cassegrain telescope 52 Celestron 51 refractor 51 riflescopes 51 photometer 51 refracting telescope 51 retroreflector 51 reflector telescope 51 Newtonian telescope 51 steering wheel tilts 50 wavefront sensor 50 telescope 49 mySKY 49 planetarium projector 49 telescopes 49 NMR spectrometers 49 Spectrograph 49 inch refractor telescope 49 ESO VLT 48 ultrahigh resolution 48 polarimeter 48 LWIR 48 EMCCD 48 spectrographs 48 spectroscope 48 Angenieux 48 refractor telescope 48 Interferometer VLTI 48 interferometers 48 #x# binoculars [001] 47 HARPS spectrograph 47 Infrared Camera 47 TSN PZ camera 47 Keck telescopes 47 EMCCD camera 47 laser interferometer 47 imager 47 shortwave infrared 47 Dobsonian telescope 47 interferometer 47 fluorescence microscope 47 Nikon D# Kowa 47 aspheric 47 eyepiece 47 beam expanders 47 adaptive optics 47 DEIMOS 46 panchromatic 46 astronomical telescopes 46 supergiant star 46 confocal microscope 46 CCD camera 46 Chajnantor plateau 46 inch refracting telescope 46 eyepiece #/#s f/#.# 46 electronic viewfinders 46 magnifications 46 Muchachos Observatory 46 Transducer 46 Axio Imager 46 submillimetre 46 MWIR 46 inverted microscope 46 ESO telescope 46 submillimetre wavelengths 46 Submillimeter 46 CMOS Sensor 46 monochromator 46 binocular 46 X FEG 46 astronomical telescope 46 Adaptive optics 46 Fresnel lens 46 Unit Telescopes 45 Panoramic Camera 45 Roque de los 45 Ultraviolet Optical Telescope 45 electron multiplying 45 colorimeter 45 widefield 45 Aspherical 45 #mm f#.# lens 45 imaging spectrometer 45 Spectrophotometer 45 darkfield 45 image intensifier 45 monochromators 45 infrared imager 45 Keck Telescope 45 aperture telescope 45 optical sectioning 45 TECHSPEC 45 Cosmic Origins Spectrograph COS 45 resolution panchromatic 45 magnification 45 arcminutes 45 eyepieces 45 Telescope 45 deformable mirrors 44 inch Samuel Oschin 44 #x magnification [002] 44 X ray detector 44 Magnetic Imager HMI 44 LTQ Orbitrap 44 Subaru telescope 44 deconvolution 44 millimeter wavelengths 44 LORRI 44 astrophotographer 44 Raman spectrometer 44 Meade mySKY 44 radiometers 44 Interferometric 44 NSOM 44 EX DG HSM 44 Field Imager WFI 44 spectrographic 44 ESO La Silla 44 brightfield 44 confocal 43 Small Magellanic Cloud 43 cryogenically cooled 43 IR LEDs 43 refractors 43 submillimeter wavelength 43 Handpiece 43 transmission electron microscopes 43 photometry 43 NIRCam 43 Imaging Experiment AMIE 43 RXTE 43 submillimeter wavelengths 43 Confocal 43 Infrared Sensor 43 Zoom Lens 43 Tokina 43 Aspheric 43 HDS# 43 Comet Holmes 43 CMOS imager 43 Sombrero Galaxy 43 coronagraph 43 astrometric 43 #x magnification [001] 43 optically correct 43 telecentric 43 loupes 43 Lenses 43 infrared astronomy 43 infrared detector 43 Loupes 43 Submillimeter Array 43 near infrared NIR 43 WIYN 43 frequency comb 43 UV VIS 43 photometers 43 Pancam 43 microshutters 43 Fujinon 43 Micrometer 43 Orion Telescopes 43 Faint Object 43 Adaptive Optics 43 Long Wavelength Array 43 FUV 43 spectral imaging 43 GLAST Burst Monitor 43 Imaging Spectrometer 42 Delta Cephei 42 #mm f/4G ED VR 42 reflectometry 42 x ray fluorescence 42 scanning electron microscope SEM 42 Digital Microscope 42 transmission electron microscope 42 Interferometer 42 Dynamic Light Scattering 42 stereoscopes 42 micromachined 42 steerable radio 42 Riegl 42 fiberscopes 42 Optical Telescope 42 Telescopes 42 Doppler measurements 42 fluorescence detection 42 sunglass styles 42 hexagonal mirrors 42 Multi Object Spectrograph 42 ultraviolet spectrograph 42 optical telescope 42 telescope atop Mauna 42 femtosecond lasers 42 spherical lenses 42 VisuMax 42 Chajnantor 42 Gemini telescopes 42 Hobby Eberly 42 Chilean Atacama Desert 42 adaptive optics AO 42 Infrared Telescope Facility 42 FORCAST 42 UVOT 42 QuickBird 42 Meade Instruments 42 optics 42 Webb Telescope 42 orbiting telescopes 42 Field Imager 42 GALEX 42 Subaru Telescope 42 Femtosecond 42 Very Energetic Radiation 42 DISR 42 VLTI 42 spatial resolution 42 scanning electron microscopes 42 photon counting 42 globular cluster M# 42 interferometry 42 Imaging Telescope Array 42 laser trackers 42 Excimer Laser 42 Solar Mass Ejection 42 multiband imaging photometer 42 IR wavelengths 42 spectroradiometers 42 Spectrometers 42 Laser Ranging 42 collimators 42 Dual Polarization 42 microscopes 42 QWIP 42 meter Keck telescope 42 microspectrophotometer 42 Observatory STEREO 42 VLBA 42 NRAO 42 APEX telescope 42 M3D 42 Lensbaby Composer 42 interferometric 42 Excimer 42 Cedip 42 cephalometric 42 LADAR 42 Reflection Radiometer 42 photomultiplier tubes 41 nondestructively 41 infrared spectra 41 optical microscopy 41 ESO Paranal Observatory 41 submillimeter 41 NanoDrop 41 radar altimeter 41 Princeton Tec 41 JWST 41 Heterodyne Instrument 41 Paranal Chile 41 colorimeters 41 fusion splicer 41 Polarimetry 41 X ray detectors 41 Optics 41 Convection Rotation 41 binocular microscope 41 Raman microscope 41 Zeiss 41 Force Microscopy 41 SQUIDs 41 Galileoscope 41 galvanometer 41 Electron Microscope 41 spectrometer 41 Rosetta orbiter 41 Genuine Canon 41 detector arrays 41 Cavity Ring Down 41 infrared spectral 41 Near Infrared 41 Cooke S4 41 DualBeam 41 wavelength infrared 41 slender crescent 41 lenses 41 infrared telescopes 41 polarimetric 41 Varilux 41 polarimetry 41 bolometers 41 Microscopes 41 waxing crescent 41 scanning tunneling microscope 41 x ray microscopy 41 parabolic mirror 41 Fresnel lenses 41 diffractometer 41 JCMT 41 X ray Telescope 41 Spectrometer 41 Ring Nebula 41 Diffraction 41 InGaAs 41 Multi Object Spectrometer 41 Planetary Transits 41 5Mpixel 41 ESO Very Large Telescope 41 slit lamp 41 cytometer 41 photomultipliers 41 aspheric lenses 41 Absorption Spectroscopy 41 Panamorph 41 Geminga 41 orbiter lander 41 Interferometry 41 reflection nebula 41 AKARI 41 Epsilon Aurigae 41 VUV 41 ellipsometry 41 NIRSpec 41 Macro Lens 41 NASA Wilkinson Microwave 41 VLBI 41 electron microscopes 41 eclipsing binary 41 Mössbauer 41 wavefront sensing 41 Gran Telescopio Canarias 41 Electrophysics 41 Super CCD EXR 41 Cloud Aerosol Lidar 41 Jeol 41 radiometer 40 Wavefront Coding 40 Boston Micromachines 40 X ray diffractometer 40 Phased Array 40 barred spiral galaxy 40 piezo ceramic 40 optical microscopes 40 Paranal 40 Solar TErrestrial RElations Observatory 40 Heliospheric Investigation 40 diffraction gratings 40 TECHSPEC ® 40 MHz NMR 40 planetary nebulas 40 NASA Cosmic Background 40 iZon 40 Area Telescope LAT 40 multibeam sonar 40 Las Campanas Observatory 40 Lagoon Nebula 40 Axio Observer 40 ZEISS 40 Near Infrared Camera 40 Helix Nebula 40 gamma ray detector 40 UVIS 40 multispectral 40 J#.# [001] 40 monoculars 40 KH #D 40 X ray microscopy 40 borescopes 40 multiphoton 40 micromirrors 40 Comet Lulin 40 Chemical Detector 40 Explorer WISE 40 Ultraviolet Imaging Spectrograph 40 collimating 40 beam splitters 40 supernova SN 40 TerraSAR X 40 Keck Telescopes 40 X ray microanalysis 40 x ray beam 40 Synthetic Aperture Radar 40 constellation Lyra 40 Adimec 40 Pleiades cluster 40 indium gallium arsenide InGaAs 40 bolometer 40 telescopic 40 spectroscopic 40 UKIRT 40 stereographic 40 nanoindentation 40 spectrograph 40 Megapixel CMOS 40 Gigapixel 40 Photometrics 40 Spitzer infrared 40 Humminbird ® 40 Advanced Microwave Scanning 40 astronomy observatory 40 FluxData 40 Aimpoint 40 SkyCenter 40 velocimetry 40 waning gibbous 40 GROND 40 constellation Andromeda 40 Globalstar constellation 40 IBEX spacecraft 40 stereoscopic images 40 Focal Plane 40 Very Large Telescope 40 robotic telescopes 40 Giant TCR 40 nanopositioning 40 EVLA 40 cadmium zinc telluride 40 IBEX Lo 40 Infrared Pathfinder Satellite 40 astrophotography 40 optical telescopes 39 Tunable 39 Fabry Perot 39 Titan ETEM 39 Hobby Eberly Telescope 39 microscopy techniques 39 unaided eye 39 Horsehead Nebula 39 AMLCDs 39 Laser Scanner 39 Moessbauer 39 ultraviolet imaging spectrograph 39 Gretag Macbeth 39 parabolic antenna 39 laser triangulation 39 shorter wavelengths 39 stereoscope 39 occultations 39 Intralase 39 photoluminescence 39 interacting galaxies 39 earthshine 39 borescope 39 parabolic troughs 39 ophthalmoscope 39 Red Rectangle 39 Effelsberg 39 Arecibo telescope 39 Epsilon Eridani 39 Liquid Chromatography 39 celestial mechanics 39 Helioseismic 39 Cerro Pachon 39 Cosmic Origins Spectrograph 39 laser diode module 39 Printhead 39 NASA Gamma ray 39 refractometers 39 WaveFront 39 redshifts 39 fluorescence detectors 39 CSIRO Parkes radio 39 #mm f/#.#G 39 constellations Cygnus 39 ZF lenses 39 scanning electron 39 aberration corrected 39 PaxScan 39 optical coherence tomography 39 WM Keck Observatory 39 Cepheid variables 39 SWIR cameras 39 Neutral Mass Spectrometer 39 AcrySof 39 Cerro Paranal 39 Medium Format 39 astronomical objects 39 optical comparators 39 microscopy 39 La Silla observatory 39 monocular 39 STScI 39 telecentric lenses 39 confocal microscopes 39 visible wavelengths 39 SDSS telescope 39 Context Camera 39 Dektak 39 Earthshine 39 Las Campanas Chile 39 Crab Pulsar 39 telescopes binoculars 39 Aplio 39 HiRes 39 infrared ultraviolet 39 redshift 39 excimer lasers 39 Solar Orbiter 39 solariX 39 curved mirrors 39 Uncooled 39 radar interferometry 39 confocal laser scanning 39 confocal scanning 39 Pan STARRS 39 enhanced TruePic III 39 Comet Halley 39 multiwavelength 39 polarizing filter 39 ion traps 39 multispectral imaging 39 Spectrophotometers 39 infrared detectors 39 UV Visible 39 Credits ESA 39 HIRES spectrometer 39 APXS 39 infrared 39 FE SEM 39 multibeam 39 HARPS instrument 39 RHESSI 39 ENVISAT 39 Pleiades star 39 stylus profilers 39 Metamaterial 39 Large Binocular Telescope 39 WFC3 39 AcrySof R 39 scanning electron microscope 39 microwell plates 39 microkeratomes 39 Atacama Large Millimeter Array 39 Transmission Electron Microscope 39 #mm SLR 39 Leica Microsystems AG 39 Lunar Laser Ranging 39 WISE infrared 39 Fourier transform infrared 39 Ultra Wide Angle 39 High Resolution Imaging 39 Leica M# 38 image intensifiers 38 Mini Thermal Emission 38 DSLR Camera 38 transiting planet 38 infrared emitters 38 Infrared Mapping Spectrometer VIMS 38 confocal imaging 38 Mask Aligner 38 TruLaser 38 Bystronic 38 Thermal Emission 38 LCD Displays 38 photochromic 38 X ray Telescope XRT 38 optical wavelengths 38 infrared wavelength 38 Morphologi G2 38 Optical Coherence Tomography 38 astrometry 38 Moderate Resolution Imaging 38 Terahertz waves 38 WMAP satellite 38 lightwaves 38 Nova NanoSEM 38 spiral galaxy Messier 38 SkyScout 38 fluorescence spectrometer 38 infrared observatory 38 Intra Oral 38 ultraviolet wavelengths 38 confocal microscopy 38 optomechanical 38 Solar Observatory 38 Rimless 38 SMD LED 38 Excimer laser 38 Keck Observatory 38 laser sintering 38 planetary Transits 38 infrared spectrometers 38 SINFONI 38 inch reflector telescope 38 NMR spectrometer 38 Gamma ray Burst 38 HARPS spectrograph attached 38 Herschel SPIRE 38 diffraction patterns 38 quantum cascade 38 optical interferometry 38 micromechanical 38 Endoscope 38 Ytterbium 38 NASA Great Observatories 38 spectroscopic observations 38 astro comb 38 microbolometer 38 Voyager spacecraft 38 Crizal 38 computed tomography CT scanner 38 UVIS instrument 38 spaceborne 38 Luxtec 38 comet Hale Bopp 38 photochromatic 38 Infrared Thermal Imaging Spectrometer 38 waxing gibbous moon 38 Reflectance 38 XMM Newton 38 spectro 38 Imaging Spectrograph 38 IntraLase FS 38 La Silla 38 macro lens 38 parabolic dish 38 Photometric Imaging Receiver 38 tunable lasers 38 Planetary Camera 2 38 Caltech Palomar Observatory 38 corneal topography 38 ecliptic plane 38 Dumbbell Nebula 38 Advanced Spaceborne Thermal Emission 38 Mission SRTM 38 Keck telescope 38 #.#T MRI 38 galaxy NGC 38 electron optics 38 PC DMIS 38 electro optical sensors 38 Solar Dynamics Observatory 38 RS Ophiuchi 38 Micro Epsilon 38 EMCCD cameras 38 spectrophotometer 38 filmless imaging 38 orbiter Mars Odyssey 38 Lick Observatory 38 Bug Nebula 38 induced fluorescence 38 Triangulum Galaxy 38 planetarium dome 38 SIRTF 38 gamma ray burst GRB 38 microscopy technique 38 Laser Tracker 38 LIDAR Light 38 gamma ray telescope 38 lens tints 38 Mauna Kea Hawaii 38 wavelength tunable 38 Comet Hartley 2 38 Rosette Nebula 38 laser microdissection 38 spectroscopy 38 Sofradir 38 Steward Observatory 38 ultrafast lasers 38 beamline 38 mass spectrometer 38 photon laser 38 Image Sensor 38 Applanix 38 FIB SEM 38 Laser 38 retrograde orbit 38 infrared telescope 38 constellation Taurus 38 VIMOS 38 THEMIS Image 38 HiRISE camera 38 optical microscope 38 ASTRON 38 emission scanning electron 38 La Silla Observatory 38 photomultiplier tube 38 Galilean satellites 37 stellar occultation 37 Laser Modules 37 weak gravitational lensing 37 Facility SIRTF 37 robotic Canadarm 37 halogen lights 37 videoscopes 37 Hubble Space Telescope HST 37 Edmund Optics 37 Miniaturized 37 BLG #Lb 37 Scanning Electron Microscope 37 Cubesat 37 lidar 37 X ray wavelengths 37 telescope eyepiece 37 cryo electron microscope 37 Astrophysical Research 37 millimeter wavelength 37 piezoelectric motors 37 Orion nebula 37 scintillator 37 femtosecond 37 foreground galaxy 37 scanning microscopy 37 radio occultation 37 electron tubes 37 telescopic observations 37 X ray observatory 37 Skynet 5C 37 Raman spectroscopy 37 ion microprobe 37 Thermo Scientific Nicolet 37 aberration correctors 37 HRTEM 37 Calibrators 37 XMM Newton observations 37 interferometric observations 37 Spitzer infrared spectrograph 37 X ray observatories 37 colposcope 37 infrared wavelengths 37 AZ# [001] 37 ski goggle 37 Teledyne Imaging 37 Carnegie Observatories 37 nano patterning 37 Planck satellite 37 Sofradir EC 37 Plasmonic 37 hyperspectral 37 FT IR 37 KAGUYA 37 CALIPSO 37 GIOVE B 37 photon microscopy 37 RAS Observatory 37 Amateur Astronomers 37 Extreme Ultraviolet 37 gravitational lens 37 Gravity Probe B 37 cosmological distances 37 Object Tracking 37 Bruker BioSpin 37 star clusters nebulae 37 interferometric technique 37 Streamlight 37 Cassini Image 37 Ophir Spiricon 37 superconducting magnet 37 x ray diffraction 37 SECCHI 37 Herschel telescope 37 located atop Mauna 37 sensor arrays 37 Artis zeego 37 BrightLase R 37 BioScope II 37 optical 37 Microscopy AFM 37 geosynchronous satellites 37 Faulkes Telescope 37 laser scanning confocal 37 precision optics 37 Ray Spectrometer 37 Telescope Array 37 parabolic dishes 37 luminous galaxies 37 laser scanners 37 powder diffraction 37 Reticle 37 NOAO 37 ATST 37 Nanoprobe 37 VISX 37 Neutron Spectrometer 37 Energy Stereoscopic 37 NASA CloudSat 37 galaxy M# [001] 37 Lunar Orbiter 37 infared 37 Mars Descent Imager 37 Image Intensifier 37 Space Telescopes 37 NASA STScI 37 spectroscopic measurements 37 viewfinders 37 HDL 3C 37 observatories 37 Pulsed 37 laser scanner 37 HD# [005] 37 Gravitational lensing 37 CMB radiation 37 Ultrafast 37 Focused Ion Beam 37 Beamline #.#.# 37 Scanning Probe Microscopy 37 QImaging 37 CZT detectors 37 AxioVision 37 Fiber Laser 37 Field Planetary Camera 37 optical coherence tomography OCT 37 Carl Zeiss 37 fainter objects 37 Array ALMA 37 photons emitted 37 AFMs 37 flyby spacecraft 37 JEOL 37 constellation Cassiopeia 37 quantum cascade lasers 37 Kontron AG KBC 37 visible NIR 37 ultrasonic transducers 37 Fermi telescope 37 Free Electron Laser 37 amateur astronomers peering 37 Mastcam 36 Ultraviolet Imaging Spectrograph UVIS 36 gamma ray telescopes 36 MultiWave 36 JDEM 36 Tissue Welding 36 scanning tunneling microscopy STM 36 scanning optical microscopy 36 Quadrantid meteor shower 36 spiral galaxy NGC 36 Observatory Very 36 Toric 36 Distance Measurement 36 Biomorphic 36 Lulin Observatory 36 Erlenmeyer flasks 36 hyperlens 36 Laser Diode 36 binocs 36 Doppler radars 36 collimated beam 36 HORIBA Jobin Yvon 36 ion funnel 36 Proxima Centauri 36 Anik F2 36 THEMIS spacecraft 36 loupe 36 Photochromic 36 Advanced Camera 36 RS Oph 36 HD #b [001] 36 Ultrasonics 36 Sidewalk Astronomers 36 infrared spectroscopy 36 frequency combs 36 X ray binary 36 Computed Radiography 36 laparoscope 36 pipettors 36 capillary electrophoresis 36 NASA STEREO 36 X ray diffraction 36 Telescope LSST 36 infrared spectrograph 36 LEXT 36 X ray telescopes 36 elliptical galaxy NGC 36 spectrophotometers 36 spectral characteristics 36 Moritex 36 gravitational lenses 36 wavelengths 36 orbiting gamma ray 36 pyrometers 36 hyper spectral 36 Spherical 36 spectrometers 36 LED Lamp 36 Fluorescence 36 Stratasys FDM 36 AB Aurigae 36 Focal Plane Array 36 optical metrology 36 parabolic antennas 36 JENOPTIK 36 intraoral cameras 36 Aspheric Lenses 36 observatory telescope 36 Hawaii van Dokkum 36 Atacama Large Millimeter submillimeter 36 Solar Optical Telescope 36 Hanny Voorwerp 36 millisecond pulsar 36 Confocal Laser 36 opto acoustic 36 Interchangeable Lens 36 Orbiter MRO 36 Scanning Probe Microscope 36 spotting scopes 36 Suzaku X ray 36 electron microscope 36 nightglow 36 interplanetary spacecraft 36 RY Sagittarii 36 WIYN telescope 36 gamma camera 36 HiRISE camera aboard 36 Lunokhod 36 transmission electron microscopy 36 backside illumination 36 cryo electron microscopy 36 Telephoto lenses 36 nPoint 36 Waveguide 36 Burst Alert 36 Micromachining 36 Lovell Telescope 36 micrometer sized 36 MPG ESO 36 filamentary structure 36 Multispectral 36 ESA Herschel 36 constellation Cetus 36 fluorescence microscopy 36 Descent Imager Spectral Radiometer 36 laser optics 36 ALMA antennas 36 Varilux R 36 optical infrared telescope 36 Jupiter Ganymede 36 micropipettes 36 NASA Landsat 36 Scanning Probe Microscopes 36 Canary Telescope 36 Lastolite 36 aCGH 36 scanning tunneling microscope STM 36 XMM Newton satellite 36 AU Mic 36 tomography scanner 36 WFPC2 36 Tunable Laser 36 Cat Paw Nebula 36 Imager 36 Trapezium 36 ultraviolet lasers 36 ESA XMM Newton 36 ultrashort pulses 36 Carl Zeiss Vision 36 VLT telescope 36 Omega Centauri 36 mass spectrometers 36 planetary transits 36 Photonic Products 36 gamma ray observatories 36 Ultrasonic Level 36 Fujifilm FinePix F# [002] 36 Thorlabs 36 scanning electron microscopy 36 radiographic imaging 36 Keck Interferometer 36 arrays 36 Atomic Force 36 sub millimeter wavelengths 36 Nikons 36 celestial sphere 36 telescopes microscopes 36 Liquid Crystal 36 meter Keck telescopes 36 HRSC 36 HUDF# 36 ESA Proba 36 neutrino beam 36 MetOp 36 supernova remnant 36 Sojourner rover 36 aboard ESA Envisat 36 Telescope BAT 36 MPIfR 36 NOAA GOES 36 starburst galaxy 36 Arecibo Observatory 36 synthetic aperture radar 36 HD#b 35 NASA Infrared Telescope 35 densitometers 35 multiphoton microscope 35 C1XS 35 Nikon Metrology 35 Arecibo radar 35 Electrostatic 35 RetCam 35 exoplanetary 35 Radioastronomy 35 Erenna