I bought this Angle Finder to access more conveniently to the image captured by my camera reflex during its installation in the home of my telescope. Alas, the observed optical quality is so poor quality that it is better not to use it. Worse, the sharpness of the image restored to the eye is not the same depending on the magnification chosen this angle gear! The difference in price with the same brand of equipment finds its justification: the wrong equipment for a small price.
