My 7D was in the camera case, without a lens. So when I saw this fleeting event, I grabbed the only camera that was available, my little Nikon Coolpix 4100, which I use primarily for work. I quickly shot a 4-frame, hand-held panorama. Later I assembled it in Photoshop.
The skies were totally overcast, with a light rain. Just before sunset, the Sun dropped below the low level clouds and illuminated everything with an orange glow. The rainbow was brighter, when I was searching for a camera. But I'm glad to have captured this much of the event.
RainbowDouble rainbowEl Paso texasEric Chesak