Pretty stoked about this image, completely accidental capture!
I was aiming to do a timelapse of the sun and a prominence off the side of it (which turned out to be dying out so I got nothing from it), and when I was rendering the video, I discovered one of the stacked images had some odd artifacts on it. Upon further searching, I found that a plane (specifically a Qantas Brisbane-Canberra flight at cruise altitude) had crossed across the sun, and I captured a fair few frames of it. So here it is! I have been hoping this would happen for a while but its so hard to plan!
There are more images
here
ZWO 533MM Pro
Lunt 60mm Ha
Skywatcher Heliofind