Fake atmosphere glow settings for Moon, radius = 1.738e+006(true scale)
Main tab;Haze density = 0.01
Haze horizon colour = 8!
Rest = '0'
Height control;Haze exp. height = 250000
Blue sky exp. height = 0 n/a
Floor/ceiling = will auto-adjust via the 'haze exp. height' to settings that I don't understand. I leave these alone, no idea!
Lighting;Haze glow amount/power = 1/1.25(default)
Blue sky glow amount/power = 0 n/a
Envirolight = 0
Tweaks;Fake dark power = 8
Sharpness = 10(default)
Those ^^ should keep the glow appearing only where it's being directly lit.
* Ulco, sorry... The glow from the procedural stars was done in post, yes.
I've tried all sorts, from GI in the default home-planet's atmosphere, to 3D cloud layers round the inside of the background node to get real TG2 glow from the stars, none have worked, yet. I will keep trying with that as I think it really could, somehow...
Another thing I did was use two sunlights, one in atmo, one in surfaces. I kept the Sun elevation quite high(25) to get a nice crescent orientation but that lights the entire atmosphere up like day time. The 'atmo Sun' is exactly the same but I lowered the strength from default settings to '0.25'. This creates problems of its own!
The ground of the 'home-planet' will also be lit like day time and that's no good in a night scene. To get around that(not visible here, as there's no ground, but...) I've placed a new planet with its surface above any features on the home-planet but below the Moon/Suns. You can't see the inside-surface of a planet with a positive radius so, the outer-surface acts as a shadow caster on the terrain of the home-planet, which I am lighting by other means from below that shadow-planet's surface level. I'll post some more renders showing both Earth and Moon once they are done, it's looking pretty natural so far but, you lot will be the judge of that, I suppose...