Hi Davo just did a visual on Canopus, saw nothing like the funky effect in your image. Must be lenticular light bounce if the shot was afocal.
The effect is to well resolved to be an object so it most probly is equipment generated 99% sure.
It doesn't really look like anything to worry about too much - after all it IS still headed away, or at least it's not heading directly towards us/you.
Perhaps you caught aliens in the process of performing an extraterrestrial globular transfer....... but my guess is that it was really just an internal reflection....
Comparing the two examples and using an edge detect function in Corel Photo paint, the artifact looks the same in both images.
Cheers
Dennis
There is a nerd at every party - - Dennis you should be called Spock. hey now hang on a sec, guys didn't we see him running around in a space suit in july?
I think it is a reflection, but of what and how fast it was moving is a different question?
It seems to be in all my images from last night. It's only in the ones with a bright star near the centre. I thought it might have been the new fish tank inside with its 5800k grow light (it's blueish), but the images after I turned it off still have the blue mark. I also noticed that if an image had star trails then so did the blue mark. Only thing different I did from any other night was have the laptop out with me trying out DSLRFocus (works a treat). No blue tooth but I do have a wireless network router. See what happens next time.