SVBONY Dual Band Filter 6.5nm First Impressions

SVBONY has introduced their fist Dual Narrowband filter. It's quite narrow and has some impressive specifications. More details about ti will come out soon I am sure. For now I am testing an early prototype. It is the first time I have done this type of narrowband HOO imaging with a OSC camera.
Link to the filter.
www.svbony.com/sv220-dual-ban...