LOA 3D Deep Immersion 21mm Set

65 Degree Widefield AFOV

Fully Multi-Coated

Fully Machined anodized aluminum bodies and housings

No grooves on barrels (holds alignment in The Binotron 27!)

Rubber Eyecup

Array Glass 1/10 Wave Flat Fully Multi-Coated

Cemented with a Proprietary Process

*In the LOA 21 3D Pair, only one eyepiece has the LOA (Lederman Optical Array). The other LOA 21 does not have the array and is therefore called "The Neutral".

When used in a Binoviewer, this creates the 3D. So, when viewing the Moon, the eyepiece with array is removed, and a second matched Neutral replaces it.

Now lunar views are two-eyed, but conventional. The 3D interferes with lunar viewing and is not recommended.