[LewisM]

The following tri-channel image splits are from a Sony sensor OSC CCD that I obtained 2nd hand. As you can see, there is a significant issue with the centre of the sensor, notably blocking the red (with some blocking of blue and green).

I have been messaging directly with the manufacturer, and the current suggestion is the sensor was directly exposed to extreme light (like solar imaging WITHOUT any filtering) or there is contamination on the cover slip (seems to me that occurring dead centre is a statistical near improbability). The manufacturer wishes to take it back to inspect, and has noted that sensor replacement is likely.

Any opinions on what may be the issue here? The manufacturer has confirmed that the effects being seen are NOT that of moon light pollution (these were taken at 94% moon) but a sensor issue of some sort.

NOTE: these are unprocessed, non-calibrated files - no flats, darks or bias, so it is NOT calibration file over-correction.