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JP
I focus semi automatically using my JMI moto electric focuser attached to my focuser and use my eyes as a final litmus test
Previous to that I used the FWHM focus feature on BYEOS but found it was hit and miss with sharp focus
On BYEOS live view frame and focus , I find a magnitude 1.50 to 2.50 star not far from intended object and take a series of 30 sec exposures , tweaking in and out until the diffraction spikes are sharp as possible ( atmospheric conditions do affect your star diffraction spike sharpness )
It’s a painfully long process ( 15mins ) but usually get tac sharp stars 90% of the time
Be advised that your focus on an object can drift over 2 or more hours as your object ascends. It’s happened to me on a few occasions. If your imaging for only short periods I wouldn’t bother checking each frame , just the first few
Cheers
The focus in your image is not too far off , Eta Carina Star is not too far off sharp focus , although you have slightly eggy stars at 30 sec subs possibly due to polar alignment and tracking
Nice image all the same
Well done !!!
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