SWAROVSKI Eyepiece 25-50x W for ATS / STS Series

All Swarovski Optik eyepieces are waterproof and compatible with the telescopes of the ATM/STM, ATS/STS series and the CTS. A protective glass prevents the ingress of dust and dirt even when the eyepiece is removed. The bayonet connection ensures a quiet and easy change, and the automatic locking system prevents accidental unscrewing. In addition, all eyepieces come with eyepiece protection caps. With the new eyepiece 25-50x W, you can enjoy the viewing comfort of a wide-angle eyepiece across the entire magnification range. Weighing only 295 grams and featuring a unique optical system with an aspherical lens for a sharp, detailed viewing experience, this new eyepiece represents the innovative technology of SWAROVSKI OPTIK. It is excellently suited for digiscoping. With dimensions that correspond to those of the 20-60x eyepiece, all existing Swarovski Optik adapters are also compatible with this eyepiece. The magnification range covers the most common settings in birdwatching and allows for both scanning the terrain and precise bird identification. The wide-angle-zoom allows for images of both flocks of birds and detailed shots of individual species. Magnification: 25-50x Exit pupil diameter: for the 65: 2.6-1.3 for the 80: 3.2-1.6  Exit pupil distance: 17 mm Field of view at 1,000 m: 42-27 m Field of view: 2.4-1.55 degrees Field of view for glasses wearers: 60-70 degrees Eye-side field of view: 60-70 degrees Objective or eyepiece focal length: 18.2-9.4 mm Dawn number: for the 65: 40-56.5 for the 80: 44-63 Length approx.: 86 mm Weight approx.: 295 g