I have read up what I could find about this subject but have a question I cannot seem to answer
It’s my understanding that when you go into your “Filter Setup” screen that the focal point box is actually the “Offset” box if you have the “Auto Adjust Focus Per Filter” option used.
It is also my understanding that auto focusing through the NB filter is not the best method and that we should use our LUM filter first and then apply the offset for the chosen filter in order to get it into focus.
So with that being said. How are you determining what your offset is?
I’m see that people are running an auto focus stream like L,L,HA,HA….L,L,OIII,OIII…ETC
Since the software has a hard time focusing through a narrowband filter would it be best to let it try to get it as close as it can and then manually dial it in until it is sharp and use the resulting number as the offset?
I’m guessing that you want to do this on the clearest night possible to get the best focus you can in order to compete with the changing seeing conditions outside.
Lastly can’t the changes in seeing conditions have an effect on the focus and thus messing up the offsets?