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Monday, July 17, 2017

Monsoon Storm from Kitt Peak

Last night while between local storms on Kitt Peak, I watched some storms around the area.  This one to the northwest of Kitt Peak was quite pretty and spectacular at the same time.  I took a series of five exposures in an HDR sequence and this is the middle exposure at ISO 400, f/8, 1/400 seconds at a focal length of 17mm on my Canon 70D.

This is a combination of 5 frames from 1/1000 second to 1/160 second exposures which shows the range of activity from the rays from the sun behind the clouds to the mountains and valley in the foreground.  Note the area in between the anvil and the local mountains which is covered in water from rainfall in that area.

Tuesday, July 04, 2017

Summer Milky Way from Kitt Peak

The Summer Milky Way sets over the little Tohono O'Odham town of Sells as viewed from Kitt Peak.  The exposure was made with my Canon 70D using a 17-70mm Sigma lens at 17mm focal length with an exposure of 30 seconds at f/2.8, ISO 1600.

International Space Station and the Milky Way in twilight

While taking a timelapse of the summer Milky Way my sequence caught the International Space Station flying over in the morning twilight.  Some clouds are moving in from the left and the Milky Way with the Tea Kettle of Sagittarius at the bottom, just about to set.  The Tohono O'Odham town of Sells is just below the Milky Way in this view from the 90 inch Bok Telescope's Bok Walk on Kitt Peak.  This image was taken with my 17-70mm Sigma lens at 17mm focal length and an exposure of 30 seconds at f/2.8, ISO 1600.