Astronomical use

[ajeb78]

The lowest possible light pollution luminance it seems possible to set using the showmysky GUI is 0.01cd/m^2. For simulating dark sky zones it would be nice to be able to set at least an order of magnitude lower: the LP luminance in Bortle 4 zones is around 0.0025 cd/m^2 and in Bortle 1 it may be as low as 0.0014 cd/m^2.

(Yes perhaps it's weird trying to simulate such dark skies but I'm interested in the sky background spectrum I should expect in the absence of any light from astronomical sources.)

It's already a very cool sky model, but would it be possible to add a simulation of zodiacal light and skyglow?