Celestron Ultima 100 - 45 Degree Spotting Scope

100mm Aperture: Over 50% More Light for Dawn and Dusk

The defining feature of the Ultima 100mm is its light-gathering capability. The 100mm refractor objective collects over 50% more light than an 80mm model, a critical advantage during the low-light conditions of dawn and dusk when wildlife is most active. This light is focused through high-quality BaK-4 prisms and a fully multi-coated optical system, maximizing contrast and color fidelity for clear, sharp images even at the highest magnification.

The 22-66x Zoom Eyepiece: From a 94 ft Field to High-Power Detail

The included 8mm-24mm eyepiece gives you a seamless 22x to 66x magnification range without swapping eyepieces. At its lowest 22x setting, you can scan a wide 1.8° angular field of view to easily locate targets. Once you've found your subject, a simple twist of the eyepiece zooms you in to 66x, narrowing the field to 1.0° to resolve fine details from a distance. For added utility, the eyepiece features an integrated T-adapter, making it ready for digiscoping with your DSLR camera.

Field-Ready Design: A 72 oz Waterproof and Nitrogen-Purged Optic

Designed for the outdoors, the Ultima 100mm is fully waterproof and nitrogen-purged to prevent internal fogging during sudden temperature changes. The durable, rubber-armored housing allows for subtle observation and protects the scope from bumps and scrapes in the field. While its large aperture results in a substantial 72 oz weight, it remains a portable optic, especially when transported in the included padded, view-through carrying case that allows you to use the scope without fully removing it.

Angled Viewing with 18mm Eye Relief for All-Day Comfort

The 45° angled eyepiece design offers significant ergonomic advantages for extended viewing sessions, reducing neck strain whether you're observing level or looking up. This setup is also more convenient for sharing views with others of varying heights without constantly adjusting the tripod. With a generous 18mm of eye relief, both eyeglass wearers and non-wearers can see the entire field of view comfortably without straining.

Ultima 100mm vs. 80mm: The Decisive Aperture Advantage

Choosing between spotting scopes often comes down to aperture. While an 80mm scope offers a lighter package, the Ultima 100mm provides a decisive advantage in image quality, particularly when conditions are less than ideal.

• Brighter Image: The larger 100mm lens produces a brighter, higher-contrast image, which makes it easier to distinguish subtle markings on a bird or count the points on a distant antler in fading light.
• Higher Resolution: Aperture dictates the theoretical limit of resolution. The Ultima 100mm can resolve finer details than its smaller counterparts at the same magnification, delivering a crisper view.
• Exit Pupil: At 22x, the Ultima 100mm produces a large 4.5mm exit pupil, delivering a comfortable and bright image to your eye. This is especially beneficial in overcast weather or deep shade.

The trade-off for this optical superiority is the 72 oz weight, making the Ultima 100mm best suited for stationary observation points where carrying distance is not the primary concern.