Optically, this is the best binoviewer you can get..clear large aperture, light weight and optics appear to be very well coated. However, the diopter adjustment mechanism is very hard to get right. No instructions provided and you cant find a whole lot of useful advice on the web on fine adjustment other than complaints. My unit arrived with a slight paint wear spot near the ocular attachement area. Not a big deal- but hey these are expensive!! And, a case would have been nice. I have to say, when I finally got everything adjusted correctly, the views were very astounding indeed. Saturn with the viewers and 9mmT6s, 1.25x compensator and the A-P 140mm was simply stunning. A hawk alighted near a tree and it was amazing through my Traveler, 1.25x and 18mm Radians.

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.

Optically a 10 for high power planetary study. Mechanically the unique individual eyepiece adjustments do take a bit of practice to get used to. Ive owned this model for 5 years and received one of the first directly from Mr Baader. I use the 1.7X and find the 0.8 mm exit pupil best for planetary contrast. Coupled with a pair of 10 mm SPLs and a 130 mm APQ telescope I enjoy breathtaking lunar/planetary views. These bino-viewers lose very little light compared to other models I have used.

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.