I purchased and am using an ASI1600MM Pro kit with an 8 position FW and narrow band (NB) filters. When doing flats with the NB filters (only, not the other filters) I get wide streaks of light originating in the middle of the field and extending to the edge. There are two streaks in each filter and the streaks are at different angles on each filter. These streaks don't seem to be associated with the filters since I've inverted and probably rotated the filters and get the same streaks in the same positions on each filter. I suspect a very dim light leak associated with the FW, since the light pattern changes with FW position, but have no idea where or how to remedy it. I can provide pictures. Have you seen this problem before? How do I fix it?
Scott Dixon
