How Narrowband do you need for Astrophotography? Analyzing Astronomik MaxFR filters

I have been trying to figure out if it is worth investing in the really narrowband filters, and haven't seen an in depth explanation of exactly what you get for 12 nm, 6 nm, or 3 nm FWHM filters. I have a hyperstar (f/2) and selecting narrow band filters that work on fast optics requires some extra considerations. Here is my attempt at analyzing the Astronomik MaxFR narrowband filters designed for fast optics, like the Celestron RASA or Starizona HyperStar. I am doing this for both my HyperStar (f/2) and Edge HD (f/7) SCT scope configuration. This is the first part looking at just the Celestron Edge HD with 0.7 Reducer and the Ha Filter.
Turns out, I like to talk, my first pass at this was more than 30 min long, sorry if the edit is a little choppy.
Links:
My Astrobin page: www.astrobin.c...
Cuiv and fast optic filters: • RASA and Hyperstar vs ...
Bokeh topics: • BOKEH Expert Shares To...
ImageJ (free image analysis): imagej.nih.gov/
Astro Image J: www.astro.loui...
Deep Space Dad looks at MaxFR filters: • Astronomik 6nm MaxFR (...
Chapters:
0:00 - Intro
0:30 - Filters for Fast Optics
3:00 - Scope Setup
4:00 - Filters with Halos
5:44 - MaxFR Ha Filter - Halos?
6:50 - Pixel Math
9:51 - ImageJ and cross sections
11:51 - Effect on star size
15:11 - Nebulosity and background
19:09 - Conclusions