Wow, that is so red! In general, because the moon is moving, I think 2.5sec for a shutter speed is a little long for maximum sharpness. I’ve heard some folks say 1/125sec is standard, but I understand that probably wouldn’t work for you here. I’d try to get the shutter speed fast than 2.5sec though, maybe my bringing my aperture down to 5.6 or something.
