1 of 1 people found the following review helpful
Baader Mark V Binoviewer
Exquisite optics, very little light loss compared to other binoviewers, or not using a binoviewer. The individual focus of each side takers a bit of skill and practice to use. I use mine with a 1.25X field lens and an APQ130 telescope. The planetary views are breathtaking even at 170 X which is roughly a 0.8 mm exit pupil for my telescope.