I finally got a clear night after more than a month, and I decided to mount my ES ED102CF w/ Hotech FF and my ASI183mm-Pro. This is the 1st time I have tried the ED102 in over a year. I am waiting on a M48/M42 adapter that was order from AMZ a week ago and has not shown up, so I could not try my EdgeHD 925 w/ COAG. With the small ASI183 and 714mm, M101 frames up very nice, so I wanted to see how the ASI183 does at 0.7"/px and f/7. I am exposing Lum at 120s and RGB at 240s.
When I started, the ED102CF was guiding the best it ever has on my G11, with the 1st 10mins pegged at 0.5-0.6" total RMS. But then on a dither, DEC got way out of whack and it seemed that the predictive algo was showing the effect of this 1 off, causing several minutes of periodic big dips/rises. After 8-10 minutes of these problems, and the error dips transitioning to error rises, it settled down back into the 0.5-0.6" total RMS range. By the way, I dither with every frame.
Is this normal?
Is there a way to have PHD2 ignor the deviations around dither?