That's a dramatic light gradient! Heaps of stars at the top, but the bright cloud suggest not too long since sunset. Have you added yellow in post or otherwise tamed the cloud mass?

Hard to choose between these two. 4sec is always "prefereable" to 6sec but at cost of higher ISO. It still looks pretty clean and the smaller aperture has reduced the coma in the upper corners. Were you using Astrotracer? Apply NR in post?
Plenty of stars recorded - it looks like good quality sky despite reflected light from the clouds.

Nice shots

... and now some action! Ripper.

I had been wondering ...
Nice documentary capture to start ...

Nice composition

Really nice monochrome

Great shot

Nice shot

Lovely greenery