Very beautiful and well build telescope. Congratulations Ed.
I want to support the importance of some of the solutions used by Ed in his DNR.
1. Stray light. For someone this could be a secondary problem, or not at all, but I think is a problem. For example, in photography, for every lens there is a hood, similar to Ed dewcap. And every experienced photographer agrees that the contrast is enhanced with the use of those hoods. More than this, many (all) manufacturers use blackened edges for lenses inside eyepieces and other accessories, for the same reason. And I still wonder why they are neglecting to blacken the edges of mirrors, and especially that of the secondary mirror. We must remember that light is not traveling in a Newtonian only in parallel line with the optic axis.
2. Ed dewcap is a solution that I have used intensively. And I have discovered that it has a second benefit, other than keeping the stray light away. Years ago, I have used a 8'' Newtonian in a summer resort, night after night, for many hours, in a place where big crowds was passing by, walking by the seaside. And there was a lot of dust and also sand in the air. The beach was only 10 feet away. Without dewcap, the dust from the atmosphere goes down the telescope tube straight to the fans, and the primary mirror, and I must clean the telescope every two or three days. With it, must of the dust stops on the inside walls of the dewcap (I call it parasolar). I don't know why, but this is the fact. And the time between cleaning goes to more than two weeks. The only difference is that my dewcap is much larger, about 2'' by the diameter that the telescope tube, also 14'' long ( coudn't make it longer because of transport reasons), and is detachable. Also, is almost closed at the telescope end, with very little gap between the telescope tube and the dewcap.
The dark bucket is an very good idea. And I will certainly keep in my mind for the next Newtonian I will build. What I don't like is that I have to modify a project which is almost finished.