Time to show.
First of all, an apology, my opening statement was a little misleading as there are no other objects used in all except the last image only the ground plane and the camera. I was at one stage using a sphere as well but found it was not needed. So sorry about that.
Moving on here’s how the images were done.
Open up bryce,does’nt matter which build, I used B6.3
select the default ground plane
Change the material to the glass mat as shown in the following images
In the DTE make the changes shown.
Select the camera and in the attributes box enter the settings.(see image)
Re-select plane1 and enter the settings shown there as well.
Go” top view” and using the “zoom tool” zoom out until the ground plane and camera almost disappear.
In the sky presets choose one of the night time skies and render the image.
What I found was every time I changed the sky I got a different image.