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3D Astronomy 1.25" L-O-A 3D Eyepiece Set for Binoviewers (Set of 2) - 21mm

5.0 (2 Reviews) Read Reviews Write Review
Brand 3D Astronomy
Part Number E-3D-LOA3D21
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Product Info

Manufacturer Description

VOTED A "HOT SKY PRODUCT - 2017" BY SKY&TELESCOPE MAGAZINE!

Groundbreaking eyepiece set and optical array creates an astonishing “3D” view of nebulae, galaxies, star clusters, and double stars with virtually any telescope equipped with binoviewers

Overview

The 3D Astronomy 21 mm L-O-A Eyepiece Set from 3D Astronomy is the result of a remarkable optical innovation that gives you an entirely new and dramatic visual observing experience. When used in a telescope equipped with binoviewers, or with astronomical binoculars that accommodate interchangeable eyepieces, the L-O-A Eyepiece Set renders an astonishing 3D view of nebulae, star clusters, galaxies, and double stars unlike anything available with standard eyepieces. After using the L-O-A eyepiece set, observers with decades of experience have remarked, “It’s like looking through a telescope for the first time,” and “I feel like a little kid again.”

Patent-Pending Optical Array Creates Dramatic 3D Effect

Each of the two eyepieces in this set has a focal length of 21 mm and an apparent field of view of 65 degrees. One is a standard high-quality astronomical eyepiece. The other has mounted on its field lens a tiny array of five glass mirrors. This is the “Lederman Optical Array” or L-O-A (patent pending). When used together in binoviewers, the two eyepieces create an apparent parallax between the images. This gives the perception of six layers of depth within the field of view, somewhat like the effect seen with 3D movie glasses. This renders for deep-sky objects a dramatic 3D appearance with high contrast and sharp detail. Dark lanes and bright knots in nebulae and galaxies appear more prominent. Open stars clusters appear to have depth and texture, and globular stars clusters appear as shimmering spheres of countless stars hovering in the field of view. While the 3D perspective is simulated and bears no relation to the actual physical distances between objects in the field of view, the visual effect is real, dramatic, and truly remarkable.

Variable 3D Perspective Adds Fun to Visual Observing

What’s more, you can adjust the 3D effect by rotating the array eyepiece in the binoviewer. The barrel is marked with an ‘N’ and an ‘F’. When the ‘N’ is facing towards you, an object in the center of the field of view appears nearer to you and in front of the background stars. When the eyepiece is rotated to ‘F’, an object appears farther away and behind the star field. You can turn the eyepiece continually between the two positions to vary the effect and achieve the best view.

As you adjust the array eyepiece, you’ll find yourself immersed in a breathtaking visual experience as you explore the range of perspectives available. You can also experiment with positioning an object at the center of the field of view, slightly off center, or near the edge to see how the continuous change in the 3D effect enhances the view. When they nearly fill the field, extended objects such as the Orion or Lagoon Nebulae can even appear tilted, with one edge apparently closer to you than the other, as if you were approaching the nebulae at an angle in a space ship.

Works With Virtually Any Telescope and Binoviewer

A generous eye relief of 18 mm in each eyepiece makes it easy to observe for long periods without vignetting or the kidney-bean effect. The eyepieces also have foldable eyeguards to keep out stray light. Each eyepiece is made from black anodized aluminum with a knurled ring to make for easy and secure handling. The ‘N’ on the array eyepiece is also conveniently raised so you can feel it in the dark as you adjust and explore the 3D effect.

The 3D Astronomy 1.25" L-O-A 3D Eyepiece Set produces the 3D effect with virtually any set of astronomical binoviewers (not included), and works with telescopes of any aperture and focal ratio, from small refractors to giant Dobsonians. The set also works in binoculars that can accommodate interchangeable 1.25" eyepieces including giant astronomical binoculars from Lunt and Oberwerk.

An Amazing View of Deep-Sky Objects in Dark Sky

Because a bright sky itself can come under the influence of the 3D effect, you get the best performance from the L-O-A 3D eyepiece set when observing under a dark sky in which you can see stars of magnitude 5 or fainter with your unaided eyes. You also need to keep your telescope optics and your binoviewer reasonably well aligned to get the full effect. The 3D Astronomy 1.25" L-O-A 3D Eyepiece Set works with deep-sky objects such as planetary and emission nebulae, open star clusters, globular star clusters, galaxies, and even double stars. The 3D effect does not work with the Moon, planets, or the Sun. However, you can purchase an optional third 21 mm non-L-O-A eyepiece (without the L-O-A mirror array) to match the other non-L-O-A eyepiece to view these objects.

Reviews

5.0 (Based on 2 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Review by Fernando m.
      1499103315
      Jul 3, 2017

      5.0 Top

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      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

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      User Notes:
      Review by Michael U.
      1498411948
      Jun 25, 2017

      5.0 Absolutely amazing!

      Pros:

      Cons:

      Comments:

      These are fantastic 3-D binoculars eyepieces for deep space objects. I recently use them on the Hercules cluster and the swan nebula for two good examples.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Specifications

      Apparent Field of View 65°
      Barrel Size 1.25" (31.7mm)
      Bolt Case Included Yes - Manufacturer Supplied
      Bolt Case Size Replacement: Agena 42x60mm
      Coatings Fully Multi-Coated
      End Caps 2
      Eye Relief by Design 18mm
      Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
      Focal Length 21mm
      Lens Elements 5
      Lens Groups 3
      Rubber Eye Guard Yes
      Eyepiece Weight 3.60oz (102.06g)
      Blackened Lens Edges Yes
      Manufacturer 3D Astronomy
      Eyepiece Focal Length 20.1mm - 30mm
      Eyepiece Field of View 61 - 70 degrees
      Eyepiece Series L-O-A 3D Eyepiece
      Barrel Type Smooth sided