The first one has a longer exposure time than I would have personally preferred because i was taking photos with several other people, and we all decided to use the same settings. We had only about ten minutes to get this right before the moon came up and blotted out the stars, so we worked quickly, and I just went with the setting thinking it wouldn't bother me. But it's a little too long for my tastes, as I typically go no more than 20 seconds with a 14 or 15mm lens, and this one was 30 seconds.
I use standard Apple screen settings, and use ProPhoto within Photoshop. However, all the JPGs that I am showing here are sRGB.