Very good binoviewer and realy nice pair of 20mm eyepieces, great quality for money.
The binoviewers are relatively light and work with my Lunt LS80 (only if removing the spacer and using the 1.6x barlow). I can't get focus in my Skywatcher ProED 100 with or without the barlow. I often have difficulty merging the images because the eyepieces are not quite aligned. I can often rotate the focus knobs to get them to line up, but then one is out of focus. When I do get things working, it looks great, though.
the binoviewer has a couple of scratches on the body, which don't affect its function, though. the barlow has a stain on the lens and the plastic bag is much wrinkled. just wondered whether it was a returned item. i kept it and am trying to make the most out of it. right now in the middle of exploring all the possibilities shorten the light path on my nexstar 8se. after much research, it turned out i still need of get a bunch of extras to make it work, such as prism diagonal, different connection adapters, etc. and some of the more unique parts have to be ordered from as far as Russia.
After decades in this hobby, I finally tried binoviewing. And after ordering the WOs from OPT, I am definitely hooked! Using the WOs with my 150 mak, I saw the most details on Mars I have ever observed. No more single eye squinting for me. Highly recommended!!
So happy that I purchased the Binoviewer As somebody who is new to this hobby I was undecided as to which eyepieces to buy and I feel like this is a great place to start. The fact the the WO bino viewers come with eyepieces and the amazing price makes this a great first purchase. Also the service from OPT was excellent.
This is a great way to get started in binoviewing. These work fine with my Celestron-11 SCT. When properly connected the magnification is around 150X with the supplied 20mm eyepieces. So not wide field, but great for smaller DSOs like globulars as well as for the Moon and planets. This is a quality product. The only small negative is the included 1.6X OCS (optical correction system) that threads into the binoviewer nosepiece is slightly smaller in diameter than 1-1/4 inch (1.22 inches). Thus the supplied cap for the nosepiece falls off when the OCS is attached. Other than that litlle problem everything has met or exceeded my expectations. I highly recommend this binoviewer.