In a message dated 97-04-16 09:53:18 EDT, you write: >I bet horizontal or yaw vibrations are canceled by delaying the pulses (or >decreasing thier frequency) of the CCD's horizontal row-clock, and verticle >or pitch vibrations are compensated with the CCD's verticle sync pulses. This may be effective if you are not using the CCD at full speed (i.e. integration time equal to only the time to shift out data). If you are, changing any of the clocking times will effect integration time, and therefore, image intensity. I once used a CCD where I clocked data out at rated speed (12MHz, I think) but let the CCD integrate for an adjustable time period after the data was finished clocking out. This worked quite well to improve the range of image intensities we were able to view. Mark A. Corio Rochester MicroSystems, Inc. 200 Buell Road, Suite 9 Rochester, NY 14624 Tel: (716) 328-5850 --- Fax: (716) 328-1144 http://www.frontiernet.net/~rmi/ ***** Designing Electronics For Research & Industry *****