The 20mm Wide Angle Eyepiece from Celestron is a 1.25" barrel diameter eyepiece designed to deliver a comfortable 60° wide viewing angle. This wide-angle view allows you to easily see the entire field of view with or without eyewear, and makes finding and tracking subjects faster. This eyepiece can be used in any spotting scope or telescope that accepts 1.25" eyepieces.
Its fully multicoated optics feature Celestron's XLT coatings which minimizes reflection and increases light transmission ensuring bright and crisp images, while delivering true colors. To increase its usability, the eyepiece is nitrogen-filled and gasket-sealed to be water and fogproof for use in all weather conditions. The twist-up eyecup unscrews from the eyepiece to reveal threads for a T-mount camera adapter for digiscoping with a DSLR.