.I couldn't tell you how I did this, except that I was fiddling with the manual controls, and stumbled upon it. Thankfully, I don't have to rely on my own memory. According to the histogram, I was using aperture priority, spot metered, and then experimented with the camera's onboard record modes. In this shot, I pulled pack a little on saturation and cut way back on contrast. The full automatic moon picture produced the orb as an unrecognizable glow that was uniformly white.
.Oops... let's switch that back right now!!