Here is an article with links:http://www.advancedphotography.net/18-tips-night-photography-capturing-beauty-night/
Be sure to know how to find the "Bulb" setting on your camera. For example, you might find it in Manual then turn down to the slowest speed until "bulb" appears allowing the shutter to remain open as long as it is held down. A remote or cable shutter release is important.
A flashlight shown on an object you want to include in the foreground can help your camera to focus.
Remember, if you hold the shutter open long enough, you can take successful images of scenes you cannot see in the dark with the naked eye.
If the moon is bright (full) use your daylight settings to photograph it eg. ISO 100 F/11
What a wonderful place to visit!
Here is a renown Yosemite photographer:http://www.williamneill.com/index.html
My Googling Yosemite Moonbows found this:http://www.yosemiteconservancy.org/events/photographing-“moonbow”