Your exposure was the killer...1 second is far far too long for the moon. ; Basically, think of the moon as a normal daylight exposure - it is after all fully illuminated by the sun! ; So with ISO100 and a middling aperture of F8 or so, you should be comfortably in the 1/100-1/250 region or faster.
Best approach for me is to use spot metering, and meter directly off the surface of the moon. ; If you don't have spot metering, then try setting the aperture smaller, F8-11 at least, in manual mode. ; Then set the shutter speed to say 1/500, and check your results. ; If you need a bit more light, slow the shutter 1 or 2 stops and try again. ; If too bright, move it up a step.
Best approach for me is to use spot metering, and meter directly off the surface of the moon. ; If you don't have spot metering, then try setting the aperture smaller, F8-11 at least, in manual mode. ; Then set the shutter speed to say 1/500, and check your results. ; If you need a bit more light, slow the shutter 1 or 2 stops and try again. ; If too bright, move it up a step.