First thing I would recommend in capturing the moon is a tripod - even before my Essential Tremor happened, I couldn't take a decently clear shot of the moon holding my camera freehand. I usually play around the with the exposure as I'm shooting, but no special filters or anything. And these are still shots using my older Olympus camera - next round will mostly be with my much betterer (LOL) Nikon. And thanks so much, @porters!