So I purchased myself some Celestron brand Binoviewers from Amazon and they arrived yesterday. I used them last night and I was seeing double of what was there. I used them on my 12" Dobsonian Telescope. To reach focus I used a two-inch 2x Barlow. For eyepieces I used two 9.7mm Meade eyepieces. So the actual magnification was about 5mm im guessing. Also both the eyepieces were not 100% the same, im guessing one was of older design and was with yellow writing and the other was written with white, also one was heavier than the other so im guessing one is cheaper than the other. But they are both Meade DS 4000 Series 9.7mm eyepieces.
Why was I seeing double through the binoviewer? I tried focusing and doing what I could but I could not get the images to merge.
Could it be because the eyepieces were not 100% exactly the same?
Is it because I used too high magnification?
Could my binoviewers be terrible quality?