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Explore Scientific  |  SKU: EPWP5245-01

Explore Scientific 52° Series 1.25" 4.5mm Waterproof Eyepiece

$89.99 $107.99

Bonus offer: after adding this item to cart, add 3 other eyepieces + the soft-sided case to get it for Free ($49.99 value)

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Explore Scientific 52° Series 1.25" 4.5mm Waterproof Eyepiece



  • 4.5mm Focal Length
  • 52° Apparent Field of View
  • 1.25" Diameter Barrel
  • Fully EMD Multi-Coated Optics
  • Argon-Filled, Water and Fogproof
  • Slip-Resistant Textured Surface
  • Fold-Down Eyecup


Unlock Detailed Views of the Cosmos

The Explore Scientific 52° Series 1.25" 4.5mm Waterproof Eyepiece is engineered for astronomers seeking to push the limits of their telescopic observations. Whether you're exploring the surface of planets, splitting double stars, or diving into the heart of compact deep-sky objects, this eyepiece delivers the high magnification and exceptional clarity needed to bring your celestial targets into sharp focus.

  • Optimized 4.5mm Focal Length: Offers high magnification views, making it perfect for detailed planetary observations and revealing the intricate structures of deep-sky objects.
  • Wide 52° Apparent Field of View: Provides a comprehensive view of the night sky, enhancing your ability to locate and track celestial objects with ease.
  • Advanced Optical Quality: Equipped with fully EMD Multi-Coated Optics for superior light transmission, resulting in brighter images, enhanced contrast, and sharper detail.
  • Built for the Observing Enthusiast: Argon-filled, water, and fog-proof construction ensure durability and performance under any conditions. A slip-resistant textured surface and fold-down eyecup enhance usability and comfort during lengthy stargazing sessions.

Experience Enhanced Contrast and Averted Vision

This 4.5mm eyepiece not only magnifies celestial wonders but also significantly improves contrast against a darker sky background, making it ideal for observing faint objects under favorable atmospheric conditions. Additionally, its design facilitates the use of averted vision, allowing you to perceive even the most subtle details by looking slightly aside, utilizing the more light-sensitive parts of your eyes.

Versatile and Valuable Addition to Your Astronomy Gear

The 52° Series 4.5mm Eyepiece is a testament to Explore Scientific's commitment to quality and value, offering a performance that rivals comparably priced Plossl eyepieces. Its versatility across various telescopic setups makes it a popular choice for astronomers aiming for the highest quality observations.

Discover the Universe with Clarity and Comfort

With the Explore Scientific 52° Series 4.5mm Eyepiece, every night spent under the stars becomes an opportunity for discovery. Designed for both novice and experienced astronomers, this eyepiece invites you to explore the depths of space with unparalleled precision and ease.

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Explore Scientific 52° Series 1.25" 4.5mm Waterproof Eyepiece | EPWP5245-01 | 811803030015

Explore Scientific 52° Series 1.25" 4.5mm Waterproof Eyepiece

$89.99 $107.99





Focal Length

4.5 mm

Focal Ratio


Field of View



Enhanced multi-layer deposition (EMD) coatings

Argon-purged, water and fog proof

15mm eye relief

4.1mm field stop diameter

Barrel Size



83.5mm length

43mm width


181.4 g | 6.4 oz
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