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Optics ❯ Spotting Scopes ❯ Spotting Scopes

Celestron Ultima 100 22-66x100mm Waterproof Spotting Scope (Straight Viewing)

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Viewing Angle: Straight Viewing
Angled Viewing Straight Viewing
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IN THE BOX
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Highlights
  • 39-66° Apparent Angle of View
  • Includes 22-66x Wide-Angle Zoom Eyepiece
  • View-Through Case
Features
The Celestron Ultima 100 is among a handful of spotting scopes with an enormous objective lens diameter of 100mm, and as such is a large and weighty scope at that. But from dawn to dusk, and everything in between, you will constantly be reminded of that objective lens size as everything you will see will be that much brighter in the viewfinder.

Ultima series scopes feature multi-coated optics to provide exceptional clarity and brilliance. All Ultimas are waterproof, making them more robust than ever before. They perform extremely well under all light conditions, which makes them ideal for all types of outdoor viewing activities including birdwatching, nature and wildlife, target shooting—even astronomy.

The Ultima series now offers the choice between 45° angled viewing or straight viewing. Most users will prefer angled scopes because they are both simple to use for birds perched high above the viewer as well as easily simultaneously shared among users of differing heights. But some will prefer the straight-through viewing models, for these are much easier to use when hunting down the object of interest in the first place. Straight-viewing models are also usually a bit lighter, brighter, and less expensive. The choice is yours.

  • Built-In T-Mount Threading for SLR Shooting
    The scope features a T-mount threading on the eyepiece barrel. This allows it to function as an ultra-telephoto lens with your SLR camera (digital or film), with just the addition of a camera-specific T-mount adapter.

  • Peepsight for quick initial location of your subject.

  • Rubber-armored housing.

  • Smooth focus knob can be turned with a single finger.

  • No-Fault Warranty
    The "No-Fault" warranty coverage assures that your scope will be repaired or replaced at Celestron's option for as long as you own it, no questions asked. The only requirements on the user's end are to ship the scope (at the user's cost) to Celestron with a proof of purchase and a check or money order for $25 to cover the costs of inspection, shipping, and handling. This warranty service is valid only for USA and Canadian citizens purchasing from an authorized Celestron dealer.

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User Manual (PDF 251.2kb)
Ultima Spotting Scopes
Celestron 100
Model Number
B&H #
CEU100S
Manufacturer #
52257
Design
Viewing Angle
Straight
Performance
Magnification
22 to 66x
Objective Lens Diameter
100 mm
Angle of View
22x: 1.8° (Actual)
66x: 1.0° (Actual)
Field of View
22x: 95.0' @ 1000 yd / 32.0 m @ 1000 m
66x: 53.0' @ 1000 yd / 18.0 m @ 1000 m
Minimum Focus Distance
22x: 33.0' / 10.0 m
Exit Pupil Diameter
22x: 4.5 mm
66x: 1.5 mm
Eye Relief
18.0 mm
View All Specs
Celestron 100
What's In The Box

Celestron Ultima 100 22-66x100mm Waterproof Spotting Scope (Straight Viewing)

  • Objective Lenscap
  • Eyepiece Cap
  • Case
  • Limited Lifetime Warranty
Model Number
B&H #
CEU100S
Manufacturer #
52257
UPC #
050234522571
Design
Viewing Angle
Straight
Performance
Magnification
22 to 66x
Objective Lens Diameter
100 mm
Angle of View
22x: 1.8° (Actual)
66x: 1.0° (Actual)
Field of View
22x: 95.0' @ 1000 yd / 32.0 m @ 1000 m
66x: 53.0' @ 1000 yd / 18.0 m @ 1000 m
Minimum Focus Distance
22x: 33.0' / 10.0 m
Exit Pupil Diameter
22x: 4.5 mm
66x: 1.5 mm
Eye Relief
18.0 mm
Features
Water Resistance
Waterproof
General
Dimensions
L: 19.0" / L: 483.0 mm 
Weight
4.5 lb / 2.0 kg
Packaging Info
Package Weight
7.55
Box Dimensions (HxWxD)
7.3 x 7.4 x 23.0
What's In The Box

Celestron Ultima 100 22-66x100mm Waterproof Spotting Scope (Straight Viewing)

  • Objective Lenscap
  • Eyepiece Cap
  • Case
  • Limited Lifetime Warranty
Eyepieces
Recommended Item: Additional eyepieces can greatly enhance your viewing experience..
Tripods & Supports
Recommended Item: Steady your scope with the support and stability you need.
Camera Adapters & Brackets
Recommended Item: Capture photos through the eyepiece of a birdwatcher's spotting scope
Car Window Mounts
+
Smartphone Adapters
+
Optics Cleaning & Anti-Fog
+
Cases, Bags & Protection
+
Chairs
+
Field Notebooks
+
Ask a Question
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Objective Lens Diameter

100mm

Body Design

Straight

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