No discussion about starlight photography can exclude the moon. Closest, largest and brightest object in the night sky. The moon presents its own challenges. Recently in August there was a rare supermoon eclipse. Did not even know it was happening. Someone on the nighttime news mentioned it was going on right then and there. I did a last minute attempt to take some photos right in my backyard. Warm night as it was also a harvest moon. It was said the moon turns red during an eclipse. Exactly why the moon changes color is best described elsewhere...
Among these three legitimate resources I see no conficting opinions. Just different ways to describe the same thing. When a lunar eclipse happens the moon turns red. So why did the photo appear orange? Why is it blurry? Troubleshooting has taught me to take multiple shots and consider the variables. As time permits I will post the full series on flickr.com
Most of my tests I got lucky weather conditions. There were scattred clouds but none directly over the moon or near the moon. I knew from experience to try settings in ISO 800 and widest apeture F5.6, the variable would be shutter speed. This is a great trouble shooting example as there are so many things which went wrong in the photo. Much I could have done better if I prepared for the shoot and did some practice beforehand.
Problem 1 color is orange not red
In my mind the moon looked orange so I choose white balance cloudy. Cloudy works so well in the daytime I figured why not at night. I regret not trying different white balance as there may have been a different result for moon color.
Problem 2 thin halo bottom left around 7 O'clock
Most likely the thin blur is unstable tripod.
Problem 3 overall the lunar surface is blurry
Most likely combination of unstable tripod and motion blur described in problem 4
Problem 4 the shape of the moon is elongated and oblong near 2 O'clock
Everything is in motion, the moon moves fast so long exposure times makes a blurry moon. It seems 4.0 seconds is too long of an exposure. I've found about any exposure longer than 1/2 a second the moon will begin to blur. Of course exactly how long is affected by the lens used. Telephoto lens have much shorter exposure timeframes than wide angle. I have not done enough tests to say for sure, but 1/2 or quicker prevents motion blur.
Armed with all of these details you are now prepared to shoot the moon. :-)