Location: White Sands, NM / Settings: F9, ISO 50, 299 seconds
Blue hour is an incredible time for taking photos - the way the light transitions can yield interesting and unexpected results. It's the very tail end of a sunset - just before darkness.
I've composed a secret gallery with all my blue hour photos in one place so that you can see what those unexpected results might look like. Partially cloudy skies work best for a more dramatic sunset look.
So, what does it take to shoot something like this for yourself you ask?
It takes being in the right location and waiting it out after the sun has set (bring a jacket!). After that, you have about a half hour to shoot while the light source is changing constantly, it's a tricky balance with a short window of opportunity.
I recommend shooting at a high F-stop with low ISO for the beginning of blue hour, followed by incremental changes to your F-stop as the light transitions - a balance that you adjust as you go along.