I use Lighroom and Photoshop in this example, but there are certainly many alternatives, e.g. GIMP that can be used in a very similar way.
If you have not read the previous two articles in this section you might want to start there:
Start with a visible light image and an UV-image converted to black and white that are well aligned:

Open both images in Photoshop:

Activate the visible light image. Go to the right and open the channels panel, there select “split channels” and you end up with a different image for each channel:

Repeat the step above with the steps above with the UV image:

Now you have six independent images. However, those from the black and white UV-image are all identical.
Go to the channels panel and select “merge channels”:

In the window that opens, select “RGB”:

Then select the channels as show. Put blue of the visible light image in the green channel, and green in the red channel. A channel of the UV image goes in the blue channel (it doesn’t matter which, since we have used a black and white conversion. I usually use blue, as shown here).

Then select “ok” and you get an image similar to the following:

Alternatively, you can leave blue and green of the visible light image in their respective channels and put UV in the red channel, as shown here:

This will result in a different false colour representation of the spectrum visible to bees.

Since I have published the first two articles of this series and now I have been experimenting with some filters that transmit roughly the spectrum visible to bees. This approach allows generating similar false-colour representation with a single exposure.
Some examples can already be found here: http://www.ultraviol...photographycom/. More on that topic in a future publication.
Published, 5 April 2014