As mentioned in the article, you need to use 'GB' in Registax for debayering Y800 data.
Since writing that tutorial though, I only now use Autostakkert to debayer, align & stack Y800 data as it is the best way I've found to retain quality in the data.
I think where you are going wrong is: You perhaps are not turning the on board debayering to OFF while capturing your Y800 data..?
Try this tutorial as well.
And thanks Arek..That's funny
