Imaging form urban environments is never easy due to the megawatts of wasted outdoor lighting spilling into the sky above our cities.

Despite posturing by our flaccid political leaders, there seems little interest in saving at least $A80 million per annum in wasted energy along with

preventing many tonnes of greenhouse carbon being pumped into our atmosphere. Illuminating low flying ducks and the undersides of clouds is still the order of the day.

There are other man made intruders that occasionally leave unwanted trails, as can be seen here a faint satellite and jet aircraft have both left their marks.

Check your monitor, can you see all 26 gray scales below?