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Celestron's Ultima 100 ED spotting scope offers 50% brighter images than the 80mm, allowing for better performance in low light conditions. Like the Ultima 80ED, the 100 mm version is a high performance model that features cutting edge optics with extra low dispersion glass ED. ED glass provides excellent colour correction and razor sharp images for serious nature and bird watchers.ED version models are also ideal for virtually eliminating chromatic aberration usually seen during planetary and lunar viewing. Day or night, this scope is optimized to provide the sharpest images available. Model also features charcoal color rubber textured paint for secure grip.Quick Overview 100 mm ED Refractor Extra Low dispersion glass provides razor sharp images Multi Coated optics 45deg viewing angle 22 66x zoom eyepiece Sight tube for quick targeting Waterproof Rubber coated texture for comfortable grip Soft carrying case Limited Lifetime WarrantySpecificationsAperture mm 100 mm 3.94 inFocal Length 540 mm 21 inFocal Ratio 5.4Angle 45 degEyepiece 1 8 24 ZoomMagnification 1 22 66xFinderscope Sighting tubeOther Equipment Tripod Balancing PlatformCarrying Case Soft CaseHighest Useful Magnification 236 xLowest Useful Magnification 14 xLimiting Stellar Magnitude 12.5Resolution Rayleigh 1.39 arc secondsResolution Dawes 1.16 arc secondsLight Gathering Power Compared to human eye 204 xAngular Field of View 1.8 1 degLinear Field of View 1000 yds 95ft 22x 53ft 66xEye Relief 18 mm 22xClose Focus 33ft 22xOptical Coatings Multi CoatedOptical Tube Length 19 in 483 mmWeight oz 72 oz 2041 gCamera Adaptable Built in T thread on EyepieceTripod Adaptable Yes
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