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Agreed, sensor selection and RBI control is important. More so than any manufacturer. The QSI has RBI control which pops up in maxim under the advanced settings. I have always had it set to medium for the flush and not yet seen any echos of the previous image. Ideally if I could combine several camera's together with a 6303E sensor with ABG then I would be happy. This sensor is around the optimum in my opinion. Sure the larger sensors are great but that means having a larger focusor and that is not always possible. Plus that sort of real estate requires some very nice field correction and that means even more money. Finding the right camera for your gear, budget and uses is pretty hard and takes an aweful lot of research. Even then there are compromises.
Most of the time it looks to me like one also needs a variety of sensors as well as telescopes. Some are good for this and some are good for that. As Terry points out; a choice has to be made about what type of imaging you are going to do from the start.
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