Celestron Ultima ED Refractor 100ED Spotting Scope


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 Warranty


Aperture (mm) 100 mm (3.94 in)
Focal Length 540 mm (21 in)
Focal Ratio 5.4
Angle 45 deg
Eyepiece 1 8-24 Zoom
Magnification 1 22-66x
Finderscope Sighting tube
Other Equipment Tripod Balancing Platform
Carrying Case Soft Case
Highest Useful Magnification 236 x
Lowest Useful Magnification 14 x
Limiting Stellar Magnitude 12.5
Resolution (Rayleigh) 1.39 arc seconds
Resolution (Dawes) 1.16 arc seconds
Light Gathering Power (Compared to human eye) 204 x
Angular Field of View 1.8 – 1 deg
Linear Field of View (@1000 yds) 95ft @ 22x 53ft @ 66x
Eye Relief 18 mm @ 22x
Close Focus 33ft @ 22x
Optical Coatings Multi-Coated
Optical Tube Length 19 in (483 mm)
Weight (oz) 72 oz (2041 g)
Camera Adaptable Built-in T-thread on Eyepiece
Tripod Adaptable Yes

"Established since 2000 & exclusively online, PicStop, is one of the UK's favourite online photographic retailers. PicStop have a huge range of photographic and related products including digital cameras, camera accessories, ink cartridges & mobile phone accessories. " --- PicStop; More Details

more details - check price

Related Products :