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Denkmeier LOA 21 3D Deep Immersion Eyepiece Pair

Denkmeier LOA 21mm 3D Deep Immersion Eyepiece Set for Binoviewers

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Estimated Arrival: Between Jul 03 and Jul 09. *ETA to USA Only

Shipping & Returns: Satisfaction guaranteed 30 day return policy.


See The Universe through your Binotron 27 in amazing and super realistic 3D! See The Universe with 6 depths. This innovation by Russ Lederman burst on the astro-scene in 2015 and now they are being used all over the world. If you have not looked through these, you have never seen M27 floating in front of the distant background stars or galaxies hanging deep in the distance BEHIND the Milkyway Stars.

*Includes One LOA 21 with the 3D Lederman Optical Array (LOA) and one LOA 21 Neutral Eyepiece.

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 called The Neutral. When used in a Binoviewer, this creates the 3D. So, when viewing The Moon, the eyepiece with the 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.



65 Degree Widefield


Fully multi-coated


Fully machined anodized aluminum bodies & housings


No grooves - holds alignment in the Binotron 27

Eyecup material



Array glass 1/10 wave flat fully multi-coated


Cemented with a proprietary process


We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. We will process the charges to your credit card and your order will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.

We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.