Hi Juan
Thanks for your answer.
First, other software, I own runs exclusively under Windows.
And secondly, I'm responsible for the entire system running on Windows, in the company where I work.
I bought the iMac just over a year ago because of the good 5k display and the good value for money in Switzerland. I have never had any problems and now PixInsight is running around again.
PixInsight convinces me very much; If there is also much to learn! Thank you for this masterpiece of Software!
Best regards
Bernie