Explore Scientific 4.5mm 82° Series LER Waterproof Eyepiece Explore Scientific

Explore Scientific 4.5mm 82° Series LER Waterproof Eyepiece

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    Explore Scientific
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    Explore the Universe with the Explore Scientific 4.5mm 82° Series LER Waterproof Eyepiece


    With its particularly long eye relief of 15.9mm, the 4.5mm LER ocular from Explore Scientific’s 82° Series of Argon-Purged Waterproof Eyepieces puts the focus on a comfortable viewing experience for all observers. A long eye relief is especially important for eyeglass wearers because it allows them to enjoy the full field of view.

    The 4.5mm focal length is perfect for observing objects that would benefit from high magnifications such as the Moon, the planets and binary stars. When atmospheric conditions are almost perfect, this eyepiece can reveal planetary details that will are truly stunning. The 4.5mm size is also great for detailed examinations of the structures within deep sky objects like nebulae.

    This multi-element eyepiece achieves superior light transmission with edge-blackened optics made of low-dispersion glass with a high refractive index. Each lens also is fully multi-coated with durable enhanced multi-layer deposition (EMD) coatings. The combination of these factors maximizes the potential of your telescope to capture the celestial wonders you seek with sharp contrast, high resolution and crisp definition.

    Like the others eyepieces in Explore Scientific 82° Series, this ocular has an ultra-wide 82° apparent field of view that immerses observers in the cosmos and naturally promotes relaxation at the eyepiece. When you relax your eyes and take in the scene presented before you, it is much easier to observe for longer periods of time, and details begin to materialize that were not revealed at first glance. The broad field of view promotes the use of averted vision, which involves looking slightly to the side of a target object rather than directly at it. This is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.

    All Explore Scientific Waterproof Eyepieces are gas-purged and O-ring sealed to create a waterproof environment that is impervious to internal fogging and prevents contaminants like fungus and dust from entering the ocular housing. This design makes cleaning the eyepiece a breeze.


    Item Number

    Focal Length 4.5mm
    Length 106mm
    Width 50mm
    Weight 9.7oz; 275g
    Barrel Size 1.25"
    Eye Relief 15.9mm
    Field Stop Diameter


    Limited Warranty is one year, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when product is registered within 60 days of purchase.

    The Explore Scientific 4.5mm 82° Series LER Waterproof Eyepiece is an essential tool for stargazing enthusiasts. This precision-engineered eyepiece series is designed to provide wide fields of view and excellent edge sharpness, making it easy to explore the universe with stunning clarity.

    This waterproof eyepiece is perfect for outdoor use, ensuring that you can continue to observe the heavens regardless of the weather conditions. Its durable construction also makes it ideal for use in harsh environments, such as deserts or high-altitude locations.

    The Explore Scientific 4.5mm 82° Series LER Waterproof Eyepiece features a large eye lens that ensures comfortable viewing even for those who wear glasses. The eyepiece's long eye relief also prevents eye strain, making it perfect for extended viewing sessions.

    The eyepiece's 82° apparent field of view provides a wide, immersive viewing experience that allows you to take in more of the night sky than ever before. Its premium-grade optical coatings also ensure that colors remain true and contrast is maximized, so you can see even the faintest celestial objects with incredible clarity.

    If you're looking for an eyepiece that can help you explore the universe like never before, then the Explore Scientific 4.5mm 82° Series LER Waterproof Eyepiece is the perfect choice for you. Buy now and experience the magic of the night sky in stunning detail!


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