M31

I would have shared them. But while copying the source files from one drive to another, I made the first mistake. Then I made the second mistake when I copied the wrong folder from the camera again and decided to update the firmware with a card format. In short... The source files are gone. The first source files I lost.
The previous images should have stacked versions.

The lens is good for its 22k price, plus it's full-frame, so I wanted to check the chromatic aberration and distortions. Please share what you have, a single shot and some stacked version, thanks.

Oleg, this is all that's left. ((
Open the original, you can see the glitches there.

I don't know what kind of corrector can be inserted between the lens and the camera. Does such a thing exist?
At f/8, the lens will already deliver better sharpness, but it's a bit dark.
I'm shooting without a guide, about 20-30 minutes of frames went straight to the trash.

Overall, this telephoto lens has a lot of lens elements, so in theory, coma correction should be present, but maybe it isn't. I can't even find in the specs what its aperture is...

The glass is decent, but don't expect any magic for 20,000 rubles.
80mm aperture, if we go by the formula.

I'm even willing to put up with seagull-shaped stars in open clusters.
I'd love to shoot more often, but it usually ends up being a weekend night trip out of town and then heading back home.

For such a glass, the result is excellent))

Thanks))
I think the camera still has a lot of potential to bring out more detail.
But there's a catch: on Sony cameras, you can't use exposures longer than 30 seconds, because forced noise reduction kicks in.

Yes. Probably 30 seconds is a bit short, but the object is bright enough. I think it should work for M33 as well.

I haven't posted last year's practice results yet.
I've gained a bit more experience and plan to go through all the basics this autumn-winter, like the Pleiades, M33, large bright planetaries, and reshoot M81-82.

Yes, the most important thing is learning how to process. I still don't really know how to do it properly.