OK, got me stumped - what the hell are the star spikes at top right:
https://www.astrobin.com/full/352941/0/
It did it with my FSQ-85 with the STF-8300C occasionally, and now in 2 subs out of the 12 with the FSQ-106 and the SXVR-M26CC.
FSQ-85 and STF version - this time upper left:
https://www.astrobin.com/338934/D/?nc=user
Is this an occasional micro-lense "thing"? I have no idea otherwise, unless a spider "bungee" web drifted across (I have run into "drifting" spiders too often out here
).
Doesn't bother me, just want to know what the heck it is - it's not equipment directly, as the equipment has changed completely (not a single thing is the same between these images apart from the guidescope and mount
)