This image was made with Quat 0.92, Dirk Meyer's freeware 3D Quaternion
generator. No post-processing was applied, what you see is what you get.
The program is available
Although Quat 0.92 is not very user-friendly for defining such parameters,
I like to 'zoom in' on a Quaternion by adjusting the length of the x-axis
in the View Editor. Adjusting the View Editor parameters is the hardest part,
a trial-and-error process really. After the ZBuffer has been defined, the
creating of an effective colouring and lighting is good fun. In spite of the
dedicated effort the program in its current version requires, it is capable
of generating stunning images, I reckon.