What a day and night!
Earlier during the day, I did a sweep of nuts and bolts and screws on the scope to see what might need tightening. Here's what I found:
- I tightened the tripod screw and support on the rings. Ended up needing to use a wrench to get them tight enough. In the end, this is a much more secure fit.
- I noticed that the grub screws connecting the feather touch focuser on the scope body could use tightening. Each got 1/8 turn.
- Tightened the bolt holding the focuser support rail. This didn't need much, but since I was checking things, it was good to put some consistency on it.
- While I was looking at the main rings, I noticed that I could see light under the edge of the rear ring. Thus, I loosened it and put an aluminum shim on that side.
I did see several instances of the laptop acting up. It lost connection to the camera a few times and lost connection to the guide cam. Two things were happening: I had secured the camera cables with a plastic wrap tie and as things got colder, this strained the plugs for intermittent connection. The guidecam was a bad USB cable. Swapped it out and all is OK. This is the second USB cable I've lost like this. I think I'll have to re-route the cables once I'm happy with how the setup will work.
I also tried running without PEC just to see what is going on. It appears that PEC does help, but not as much as guiding.
I tried re-programming PEC using the control panel and the 4x graph shows an interesting trend:
Makes me think that since this is seen via the guidecam, then there is an issue that effects the guidecam or the whole setup.