Explore Scientific Eyepiece

This eyepiece requires a 3-inch focuser. Most standard telescopes use 1.25-inch or 2-inch focusers, so you will likely need a specific 3-inch adapter or a telescope designed to accommodate this larger barrel size.

A 100-degree apparent field of view creates an immersive, 'spacewalk' effect where the edges of the eyepiece seem to disappear. This expansive view makes it much easier to locate objects and keeps them in your sight longer, which is particularly helpful if you are using a manual, non-driven telescope.

Yes, 19mm of eye relief is generally considered generous and comfortable for most observers. While it should accommodate glasses wearers, you may need to adjust your positioning slightly to take full advantage of the entire 100-degree field of view.

The waterproof design prevents internal fogging and keeps moisture, dust, and debris out of the optical assembly. This is crucial for long-term durability, especially if you observe in humid environments or leave your gear set up outside for extended sessions.

At 2353g (over 5 pounds), this is a very heavy eyepiece. You will almost certainly need to rebalance your telescope mount to compensate for the added weight at the focuser end to prevent it from slipping or straining your mount's motors.

The wide field of view allows you to use 'averted vision' more effectively. By looking slightly to the side of an object, you utilize the more light-sensitive peripheral rods in your eye, making faint nebulae and galaxies easier to detect against the dark background.