So initial tests (with asiair plus) doing 60 second subs guided and unguided have some interesting results.
Unguided appears to NOT have the double stars, but does have RA streaks with a similar frequency to guided (approx every other image).
Also trying different guide rates the spikes are proportional to the guide rate
0.5 guide rate produced 12.5'' spikes 0.9 guide rate produced 25 '' spikes and 0.25 guide rate produced 6'' spikes (Not sure what to make of that)
attached graphs and small subsection of the image of M20 as well as a full image.
Note scope is f9 100mm apo, so 900 FL no field flattener. using l extreme filter, cam is asi 533mc pro
The intermittent streaks in unguided imply to me its mechanical. But the guide rate being proportional to the spikes makes me thing electrical/comms So
Maybe theres 2 issues..