Ed that setup is beautiful. My C11 and RC8 look like that but pretty much stop there because I don't have that super mount you have!!!
I'll post some photos of my 3 rigs when I get back in front of my computer.
Thanks so much for your response. I had a lightbulb moment when I read it. The last two nights prior to last night when this happened I indeed had Stellarium open and connected during those two nights. Last night I did not have it connected. I normally don't use it anymore but I had some time on my hands between targets those two nights and wanted to surf around so I connected to it. It did not take place last night when I was not connected to it.
The only other weird thing was that when it happened both times it happened on the last two images at 4am when I was imaging the Heart Nebula up towards the Zenith.
Good stuff. I'm hoping to get out tonight but the wind is picking up and some clouds from Hurricane Irma are finding their way here tonight. Stupid Hurricane.
I'll keep you posted but please keep the thoughts coming. Pictures too.