I realigned the camera. Here is a test shot of Omega Centauri.
Exposures 12x4 min for each of RGB.
Large image 1.5X sensor pixel size. 13MB
http://d1355990.i49.quadrahosting.co...13_03/OC_L.jpg
Here is a compressed unprocessed tif file 50MB
http://d1355990.i49.quadrahosting.co...Z_OC_UNSTR.zip
You can get an idea of the light pollution gradients I have to contend with.
Bert