The Binotron has some very attractive features.
One thing not mentioned is that the Binotron has user collimateable eyepiece holders. They should come in perfect collimation, but sometimes if you have a bit of adult strabismus, you could probably correct for this condition by collimating the BVs to your own eye misalignment. I have read many times that people could not merge the image in binoviewers, and my own theory is that anyone that cannot merge likely has a bit of un-diagnosed adult strabismus. This condition is rarely diagnosed unless it is severe enough to cause eyestrain.
The focusers on the Binotron are quite nice and on par with the Maxbright II, which is a good thing.
The Binotron self centering diopters work great with most eyepieces.
It is much faster to change eyepieces with the MB II. If you are using a power switch, then you often don't need to change eyepieces, but if you change eyepieces a lot, the Maxbright II is by far and away the best BV ever made from an eyepiece change standpoint, though the Mk V is nearly as good, but I like the little arm on the MB that lets you easily get a bit extra clamping force. With the Binotron, you have to make a few turns of the collet sometimes, while with the MB II, you only need to flip the little arm. Just faster and easier.
As mentioned, the MB can occasionally have reflections, but this is often due to telescope alignment. If the optical axis of the binoviewer is tilted, then the MB can have reflections, but the Binotron can also have reflections if the optical axis is tilted. This can be due to focuser mis-collimation. This is critical on Newtonians and reflectors, but not usually an issue on SCTs. I do think that the Binotron has a bit better control over internal reflections, but I fought reflections in my Binotron for months until I finally figured out that the focuser of my dob was tilted with respect to the optical axis. Again, this can happen to Newtoninans and refractors but is rarely a problem with SCTs. When I finally got my focuser collimated, the issue with internal reflections completely disappeared in but my Binotron and Mark V. I had the issue with the Maxbright II but the scope I had at the time did not have a collimateable focuser.
It is pretty easy to diagnose the problem, but unless the focuser can be collimated, there may be nothing to be done about it, and again, I think the Binotron may have a bit better internal reflection control, but to know for sure, one would really want to do some scientific testing.
Both are excellent binoviewers and I cannot recommend one over the other. I can only tell you the behaviors of each. I hope it is helpful.
Edited by Eddgie, 03 October 2023 - 06:42 PM.