Cloud Break Optics

52° 30mm Waterproof Eyepiece (EPWP5230-01)

52° 30mm Waterproof Eyepiece (EPWP5230-01) - Main image
$70.99 $99.99 In stock

Category: Eyepieces

Description

Loved by deep sky observers, a 30mm focal length eyepiece produces a large exit pupil which floods your dilated eye with light, which is needed to see faint galaxies and nebulae. Low power eyepieces are very important to observers for a variety of reasons: Their wide true field of view make object location and pointing far easier.; Many deep sky objects are large and are best viewed at the lowest magnifications your telescope/eyepiece combination can achieve. When seeing conditions are poor, objects will often still look sharp at low powers.

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, eye relief 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.

Specifications

Item Number EPWP5230–01
Focal Length 30mm
Length 75.5mm
Width 47.8mm
Weight 204.1 grams; 7.2 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 19.9mm
Field Stop Diameter 27.2mm
Coatings: EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 4 Elements in 2 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. Click Here to register.

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Customer Reviews (4.8 / 5 · 5 reviews)

Edward Z. ★★★★★

The wide field of view on this 30mm is perfect for sweeping through the Milky Way, and the large exit pupil really pulls in faint nebulae. It feels solid and the waterproofing gives me peace of mind during dewy nights.

Leo M. ★★★★★

Took this out under a dark sky and the difference was immediate—that big 30mm focal length really pulls in the faint fuzzies I struggled with before. The 52° field is wide enough to frame most of the Veil Nebula in one view.

Miles ★★★★★

Used it on a hazy night when the moon was nearly full, and the 52° field still kept the Pleiades crisp from edge to edge. The 30mm focal length gives that big exit pupil that makes faint fuzzies actually pop without needing to dark-adapt for an hour.