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Explore Scientific 52° LER Eyepiece 3mm Argon Purged Eyepiece

£59.99

Quick Overview

The Explore Scientific 52° LER Eyepiece 3mm Ar is an excellent choice for those wanting to use high powers in their short focal length telescopes. Argon-purged, this eyepiece is waterproof to stand up to the most challenging of observing conditions. It's LER - or Long Eye Relief - design of 15mm means that even those who wear glasses to observe will find viewing through this range a comfortable and rewarding experience.
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Details

A new focal length joins the Explore Scientific line of inert gas-purged Waterproof Eyepieces with the 3mm 52° Series™ Eyepiece. A logical companion for the "grab-and-go" ED80mm f/6 Air-Spaced Triplet, this eyepiece produces 160X which will perform very well with good seeing conditions on planetary objects and also to split double stars. On the ED152 at f/8, 405X is achieved without the use of a Focal Extender or Barlow for those nights of near perfect seeing, with a very comfortable 15mm of eye relief.


Comfort, Quality, Value. The Explore Scientific 52° Series™ Most short focal length 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.









































































Description 3mm 52° Series Argon-Purged Waterproof Eyepiece
Item Number EPWP5203-01
Focal Length 3mm
Length 91mm
Width 43mm
Weight 204.1 grams; 7.2 oz. 
Barrel Size/Type 1.25” O.D. / Double Taper
Eye Relief 15mm
Field Stop Diameter: 2.7mm
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

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