Posted to CCD-world: -+-+-+- I have found another 'version' of array that EG&G offers, referred to as a Monolithic photodiode. I add this to my list of 'confusion' for types of array detectors. Dr. Scott Sutherland Senior Scientist GAMMA-METRICS -+-+-+- For information about CCD-world, send email to owner-CCD-world at cfht.hawaii.edu.