Last night I went to bed and everything was working great. It was imaging, autofocusing periodically, etc. It was supposed to take 400 images. This morning I went out about when it should be finishing up and it was in home position and apparently finished the routine (seemed a bit early though). When I got back inside to download images, I find it only had 93 of the 400 and had ended shortly after I went to bed. The only clue the log gives is that image #94 failed. It then concluded the Plan. It was dithering correctly every 5 subs, autofocusing every 1 degree temp change, everything seemed fine in the log and then just a sudden image fail. What happened? Is this rare? I've imaged about 5 nights with it and never had this happen.