Purple Mars

I've been trying to figure out why my cheap webcam yields purple pictures. After trying some R-G-B filters I think I've discovered that the camera has very low sensitivity to green. So R + B + not enough G = purple. Nexstar 5i . 100 or so images stacked with registax.

Attached Image:

I have found some web-cams have trouble with the Auto White Balance at low light levels. Setting the White Balance to one of the fixed modes might help.

John