Ok now I'm confused, Is in not the reflections of the microlens array being reflected back due to the lack of AR coating on the sensor cover glass? Or are you saying the sensor itself is being reflected back from my filters and/or AR Cover glass on the front of the camera. As far as I know my Astrodon filters are AR coated both sides? Also If it was the filter, corrector or something else would the reflections not be further from the star? Each circle is no more than 65px apart.
I guess I just assumed because it looks exactly like what I'd expect with all those circles.
http://hamamatsu.magnet.fsu.edu/arti...photodiode.jpg
Ken the Panasonic sensor
AMN34230 used in the 1600mm is listed as EOL. I'm not sure how much stock ZWO and QHY have left however.