What is the effect of reflections and contrast?
A. Generally reflections will reduce the contrast in the image. Reflections that appear on top of the part of the field you are inspecting can dramatically lower contrast, so if for example a reflection of Jupiter in the eyepiece is superposed over Jupiter’s image, it can make for a very bad view. Also, reflections from any source cause inherent scatter, so a little more light ends up scattered around the rest of the field as well.
