Andy that's splendid !
The image is especially sharp and crisp. (Our arthritic old version looks embarrassingly out of focus, and with no camera at present we can't rush out and do it again.)
We have a question about the colour. It looks roughly as expected but not quite. That could be because of the addition of the RGB data.
Is the NB mapped SHO --> RGB ? How did you combine the RGB with the NB?
Ripper stuff.
Best,
MnT