That's great Rolf. I've always wondered about NIR imaging with amateur gear and you've showed it can be done in a big way. Inspiring.
PS: just checked the video. Loved it. Very well produced. From an aesthetic point of view it's flawless and very clever. From a practical point of view the fades in and out between the filters make it very hard to see the differences. Flicking multiple times in between wavelengths to emphasize difference would have been more effective.