Celestron Ultima 100 Straight Zoom Spotting Scope

  • 100 mm Aperture Spotting Scope.
  • Waterproof and Fogproof.
  • Quick Sighting Tube.
  • Great in Low-Light.
  • Soft Carrying Case.
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  • Regular price $565.95
  • $353.40
  • You save: $212.55 (37%)

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Celestron Ultima 100 Straight Zoom Spotting Scope


100 mm Waterproof Zoom Spotting Scope: When you pick up a Celestron Ultima 100  you're picking up a high quality, 100 mm (3.74-inches) aperture refractor telescope with a 540 mm focal length and an f/5.94 focal ratio. Just like its big brothers (the astronomical telescopes) this Celestron refractor uses high-quality optical glass for superior image quality and fully coated optics for the best possible image performance.

Versatile Celestron Optics

Celestron's highly acclaimed Ultima Series is more versatile than ever. The Ultima Series feature multi-coated optics to provide exceptional clarity and brilliance. The largest aperture scope in the Ultima line, this 100 mm, provides the best performance in low-light conditions. Ultima Series spotters perform extremely well under all light conditions which makes them ideal for all types of outdoor viewing activities including bird watching, nature and wildlife, target shooting, and even astronomy.

The Ultimas are as great to look at as they are to look through. Their sleek design is accented with graceful contours that make them easy to hold and handle. The Ultima Series spotters are the perfect choice for the outdoor enthusiast looking for a spotter with quality design and construction, superior optics, and versatility at an affordable price. 

Ideal Multi-Function Spotting Scope

This series was designed to perform well in a range of viewing situations, making it a great all-around optical instrument. You'll love it for observing nature and long-distance spotting. Since it is completely waterproof you can feel comfortable using it in extreme weather. The rubberized optical tube allows for subtle observation in any nature environment. Ultima spotters are a great companion for any nature or outdoor enthusiast. Soft carrying case included.

What's more, Celestron warrants this spotting scope to be free from defects in materials and workmanship for its usable lifetime. The "No-Fault" provision of this warranty means that regardless of how the binocular may have been damaged or rendered unusable (fully or partially) by the Owner of the spotting scope, Celestron will repair or replace the spotting scope without any questions being asked.

Main Features of the Celestron Ultima 100 Straight Spotting Scope

  • Camera adaptable, built-in T-thread eyepiece.
  • Tripod compatible and soft carrying case included.
  • Eyepiece zoom offers 22X to 66X magnification.
  • Soft, rubberized body for a secure grip.
  • Built-in sighting tube to aid in image acquisition.
  • Measures approximately 23 inches long and weighs 4.5 pounds.

OPT Product Number: CE-52257


Anti FogYes
Aperture100 mm (3.94")
Body ShapeStraight Through
Close Focus33 ft.
Focal Ratiof/5.4
Free ShippingYes
Linear FOV at 1000 Yards95 ft. @ 22X & 53 ft. @ 66X
Magnification22X to 66X Zoom
MaterialRubberized body
Optical Design OLD STYLEAchromatic Refractor
WarrantyCelestron Lifetime No Fault Warranty


  • Ultima 100 Straight Spotting Scope
  • Sighting tube
  • Zoom 22x to 66x Eyepiece
  • Soft Carrying Case
  • Mounting Platform
  • Lens Cloth
  • Eyepiece case
  • Lens covers and caps
  • Celestron Limited Lifetime Warranty