|
Ray I am using +/- 1.3 pixels of dither via guider with a maximum guide error of +/- 1 pixel with a cycle of 10 in CCDAP. What I effectively get is a little dance around with all my subs. Added to this is that I do 3 precision slews after each focus run to 23 arc seconds only, it mainly gets to 7 arc seconds. That effectively means I don't get any real overlap from one sub to another but sometimes get the occasional sub that does correlates with an earlier one. I am not sure if I am dithering enough though the total effect of pointing error with dither should be enough. Thoughts?
|