Clouds, Mars, and storms from Kitt Peak

This view of a storm cloud south of Kitt Peak was made in mid-twilight.  Just around sunset, the clouds were the site of bright lightning but it had stopped generating lightning by the time the rain stopped on Kitt Peak.  This image was taken with my Canon 70D with a Sigma 17-70mm lens at 19mm focal length with an exposure of 15 seconds at f/5.6, ISO 800.

This is the view of Tucson from Kitt Peak with a busy thunder storm south of town.   This image was taken with my Canon 70D and a Sigma 17-70mm lens at 19mm focal length.  The exposure was 20 seconds at f/5.6, ISO 800.

The sky never really cleared on this night, so the Spacewatch 1.8-m telescope stayed closed.  Here, the telescope is lit by the Moon with Mars visible on the right side of the frame.  This image was taken with my Canon 70D and Sigma 17-70mm lens at 17mm focal length and an exposure of  20 seconds at f/2.8, ISO 800.