Hi all, here is my very first attempt at narrowband imaging with NGC5189.
My filters are Astronomik 13nm Ha, OIII and SII
This image was taken at f/5.0 but I seem to have more focussing difficulties than at f/3.3 so I may revert back for a while even though it is a smaller image.
all images were taken in Envisage at 21 seconds and 50 subs of each.
I combined through MaximDL the same as for RGB but substituted Ha for Red, OIII for Green and SII for Blue. I not sure if this is correct but it seemed to work. I still searching the web for narrowband imaging info so if anyone knows a good website please let me know.
As I mentioned I'm not sure if I have even done this right as yet so all tips, tricks and comments are gratefully recieved.
Cheers
