A supermoon is when the moon is the closest to earth during is orbit and is either full or a new moon. This Sunday’s supermoon is even more special because it not only is a full moon but it will also be a lunar eclipse. The best times to view it will be between the hours of 6:15pm and 10:22pm this Sunday September 27. Moon will rise partially eclipsed than become fully eclipsed by 7:20 then it will move out of the shadow to be full by 10:22. The times will depend on where you are in Arizona but those should get you close enough.
Photography hint: Grab your longest telephoto lens and put something next to the moon such as a tree, bolder or cactus. Move away from the tree or cactus so that your foreground is as far away as your zoom allows. Then when you zoom in the moon will appear to be larger. The further back you are and the more you zoom in the larger it will appear. Also use a tripod and spot meter off the moon to get the correct exposure for the moon. Change to manual and adjust the aperture as needed to get the best exposure. If you are the type that likes composite photography take a photo of the foreground before it gets too dark and then merge the photo with the one you will take of the moon.
If you want more information on the times try this link: http://www.timeanddate.com/eclipse/in/usa/phoenix