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Explore Scientific 4.5mm 52° Argon-Purged Waterproof Eyepiece - 1.25" - EPWP5245-01

Explore Scientific 4.5mm 52° Argon-Purged Waterproof Eyepiece - 1.25" - - Main image
$62.09 $89.99 In stock

Category: Telescope Eyepieces

Explore Scientific 4.5mm 52° Argon-Purged Waterproof Eyepiece

With Explore Scientific's 4.5mm 52° Series eyepiece, you will see the night sky like never before. Faint objects pop against a dark sky thanks to the EMD coatings. The flat field even at the edge makes the 4.5mm eyepiece excellent for averted viewing, which is crucial when observing dim deep-sky objects such as nebulae.

The 1.25" barrel makes the 4.5mm eyepiece compatible with many drawtubes and accessories. The textured barrel offers slip-resistant grip, even when wearing gloves.

This Explore Scientific eyepiece features an argon-purged, waterproof exterior that protects internal elements from moisture. In fact, internal elements will remain as pristine as the day they were assembled. This also makes cleaning the 4.5mm 52° eyepiece effortless. There is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements.

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Customer Reviews (4.8 / 5 · 5 reviews)

Carter ★★★★★

The image is crisp and bright even on my less-than-perfect scope, and that argon purge gives me peace of mind during damp observing sessions. It’s a solid upgrade from my old generic eyepiece for planetary viewing.

Ella ★★★★★

I’ve been using this 4.5mm on my 8-inch scope for a few weeks, and the argon-purged seal is a real plus—no fogging even on damp nights, which was my biggest headache with other short-focal eyepieces. The 52° field is comfortable enough for tracking Jupiter for a solid five minutes before I need to n

Emma O. ★★★★★

The 52° field feels surprisingly wide for such a short focal length, and Jupiter's bands stayed crisp right to the edge of view. I've pushed this to 240x on my 8" scope and the contrast on faint globular clusters is noticeably better than my old budget eyepiece.