Explore Scientific 4.5mm 52° Series Waterproof Eyepiece Explore Scientific
Explore Scientific 4.5mm 52° Series Waterproof Eyepiece Explore Scientific

Explore Scientific 4.5mm 52° Series Waterproof Eyepiece

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    Explore Scientific
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    Estimated Arrival: Between Sep 27 and Sep 29. *ETA to USA Only

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    High power eyepieces (e.g. 3mm to 10mm) are used not only for obvious observations of planets and double stars, but can be employed for bright, compact deep sky objects. Not only will the scale of an object like a planetary nebula or globular cluster be impressive as it fills the eyepiece FOV, but the background sky will be very dark as the contrast effect increases with added magnification, provided that the atmospheric seeing conditions are favorable enough to reveal a sharp image. The 4.5mm is a popular choice for a wide variety of telescopes, producing some of the highest magnification views that most astronomers will observe at.

    Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 52° Series eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality and value versus a comparably priced Plossl.

    Another great benefit of these eyepieces is the excellent contrast and ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, 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.


    Item Number EPWP5245–01
    Focal Length 4.5mm
    Length 83.5mm
    Width 43mm
    Weight 181.4 grams; 6.4 oz.
    Barrel Size/Type 1.25" O.D. / Double Taper
    Eye Relief 15mm
    Field Stop Diameter 4.1mm
    Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
    Lens Elements/ Groups 6 Elements in 3 Groups; Edge Blackened
    Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
    Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
    Eyecup Removable Flip-Down Style Soft Silicone Rubber
    Lens Caps Slide-on Top and Bottom
    Materials Optical Glass; Aluminum; Steel; Silicone Rubber
    Markings Laser Engraved: Focal Length; Series; Serial Number; Brand



    Limited USA One Year Warranty when product is registered within 60 days of purchase.

    Add'l  52° Eyepieces

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