My wife bought them as a gift not realising I was in the midst of selling my SCT and moving to an exclusively Astrophotography rig.
Matched WO 20mm 66degree eyepieces deliver a great stereoscopic view.
They are $549+ Shipping on Andrews (who don't have stock last I checked).
Looking for $350 +shipping
From the WO Website
William Optics does it better and especially cheaper! Until today, you could choose only between high-end expensive binoviewers or monocular eyepiece observation.
Today you can enjoy the benefits of BaK4 quality binoviewers in your refractor, SCT or Newtonian scope with a convenient PACKAGE including:
-1.25” Binoviewer with anti-marring compression rings
-2x William Optics 20 mm WA 66 deg. eyepieces included (available optionally too)
-Barlow nosepiece (1.6x) for easier focusing with most telescopes! It can be mounted on other eyepieces too!
-Exclusive gift box.
Or go for the ROCK-BOTTOM price of the OTA version, if you already own a set of eyepieces!
The price is very inviting, but the experience of three dimensional two-eyed viewing is even better!
WO Fit & Finish
• White powder painting.
• Large chromed thumbscrews and anodized aluminum.
• Very useful optional 2x Barlow/Correctors and extenders are available separately for telescopes with special back-focus issues.
BAK4 Prisms
• High-quality BaK4 prisms with 20mm clear aperture for maximum brightness and contrast with any telescope.
• Fully Multi Coated.
• Anti-marring brass compression rings for your eyepieces.
• Individual eyepiece focus adjustment.