One more time
well this is a solar thread and the talk IS ABOUT solar filters, but you still seem to ignore what I have been trying to teach you
Read this VERY CLEARLY
Deep space filters CANNOT be used for solar filters
Solar filters CANNOT be used for deep space filters
And here is narrowbanding filtershttps://optcorp.com ...ctions/narrowband-filters
So if i am so confusing or lacking of knowledge then please tell those sites and stores to stop giving us wrong knowledge, and better you start a store so i can buy from you the right/correct items, or say the right category, and again, i wasn't trying to make you wrong, but all that confusing from me is to correct myself, and you did, but i just follow the sites naming, and the Ha filter i have is not narrow banding then they misled me.
That link is for deep space filters and tho they are called narrow band filters and for optical deep space use, they are reasonably narrow band.
But again, they are VERY wide band compared to solar filters
They are also VERY cheap in comparison to solar filters
the stores there ARE NOT giving incorrect information ... you are just not understanding the difference