Tilt of filters causes halos

gofraro

After the latest update (which ran flawlessly) , I did a functional test yesterday evening.
To start with the inialization, I went to Arcturus. Everything went fine, until I saw the first image evolving.
A huge halo, looking like a view through a Newtonian.
In tried another test on the same object with the LP-Filter on, and the reflections got worse.
As it can be seen in the comparison there is obviously a tilt with the filters, I cannot explain.
Compared to an image from last year of the same object, a huge difference.
Any thoughts and ideas about it ?
(I'm not a newbie and using different kind of telescopes since years).

Latest Update of App/Firmware/SkyAtlas; No fancy gadgets; Exp 10s; unprocessed; tilt checked with Siril

satch984

Its not software, this is hardware
Like something in the optical train was not aligned

gofraro

satch984
But, one thing has changed in the software. The application of flat calibration frames.
As described in the App:
"If the built-in flat-field file cannot meet the calibration requirements, you can control Seestar lens at the uniform light source and click the Shoot button, and the system will automatically take and save the flat-field file."

Where does the built-in flat-field file come from initially ? If a default file is used after the software update, this could explain it, because every optical train is very different.
And as long as there is no detailed description available, I don't want to use it. The only thing I can find and see are enthusiastic videos about flats and 60s exposures.

Support@Seestar

gofraro
The halo you’re seeing is caused by internal reflections, which are common when imaging very bright stars. We suggest avoiding overly bright targets to reduce this effect.

As for the tilt you mentioned, it may be due to a slight unevenness of the sensor plane. To better assess this, could you please provide a single raw frame for analysis?

Please note that software updates do not affect the physical optical path or alignment. This issue is not caused by the update. It's possible that over time, slight impacts or loosening of components during use may have caused some shift in the internal alignment.