Explore Scientific Eyepiece

Argon purging replaces the air inside the eyepiece with an inert gas, creating a sealed, dry environment. This prevents internal fogging during temperature shifts and stops fungus or contaminants from growing on the glass elements, ensuring your view stays clear for years.

Because this eyepiece features a parfocal design, it is engineered to match the focus point of other parfocal eyepieces in the Explore Scientific line. You should be able to switch between them with little to no need for refocusing, making your observing session much smoother.

Yes, 26.4 mm is considered very generous eye relief. It provides enough space to comfortably see the entire field of view without needing to press your glasses against the eyepiece, making it an excellent choice for observers who prefer to keep their glasses on.

With a 2-inch barrel diameter and a 34 mm focal length, this eyepiece is designed for telescopes that can accommodate 2-inch accessories. It provides a wide, low-power view that is ideal for scanning large deep-sky objects like nebulae and star clusters.

A flat-field design corrects for field curvature, which is a common optical distortion where the edges of the image appear blurry if the center is in focus. This eyepiece ensures that your view remains sharp and high-contrast from the center all the way to the edge of the field.

This eyepiece is rigorously tested for water resistance in up to one meter of water. While you shouldn't submerge it, this rating means it is fully sealed against heavy dew, rain, and humidity, so you can observe in challenging weather conditions without worry.