Filip Lebeda:
I have had something similar happen to me as well. I have an overloaded SWSA GTI that guides under .7 arch sec most of the time (which is completely fine for my optics as I run at 1.8 arch sec/pixel, so I never have any noticable blur)
On some nights however, I get these huge guiding spikes out of nowhere, and lose an entire sub. It's completely random as to when it happens, on some nights it doesn't even happen at all. It's just a 15-20 arch sec jump in one axis, straight in one direction. I've checked for cable snags, I've checked if maybe the guide camera slipped a bit, but nothing. After I lose that sub, everything either goes back to normal and it doesn't happen again for a few nights or it happens in the next sub... Completely no pattern to it. My point is that before I bought the asi Air plus, I was using phd2 guiding and never had any issues. Granted, I only used it for about 5 nights but if it was the mount or guiding setup I think it would have happened in that amount of time.
Any ideas on what this could be?
How are you getting under .7" guiding with an overloaded SWSA GTi?? My Gti is now probably at no more than 50% max payload weight and even when I had my DSLR and large zoom lens mounted, my guiding never went below 1" maybe sometimes between .9 and 1" but that was very rarely!! My PA's are generally always under 20" rms error but I do only run a PA routine once!! Might start running it twice to make sure it is correct but yeah my balance tends to be pretty bang on and same with the focus!!
What is your secret haha