Sunday, August 7, 2016

Light Pollution


We thought that going up onto the North side of Mount Timpanogos would be the perfect place to get some good Milky Way images. With no moon in the sky, we expected it to be very dark. Boy, were we wrong!  It never got dark. We could clearly see each other all night long.

These two images were taken 21 days apart, while there are many differences, the most striking is the effect of light pollution on the image. You can tell the Milky Way is there in the second one, but the detail and definition is lacking - washed out by the light from the southern Wasatch Front communities.


Bridge over the Virgin River, Zion National Park, Washington County, Utah, USA, July 9, 2016. Nikon D90, Tamron SP 10-24mm f/3.5-4.5 Di II at 10mm, Manual Exposure mode, f/3.5 for 30 seconds, ISO 3200, processed in Lightroom CC and Photoshop CC.


Alpine Loop, American Fork Canyon, Mount Timpanogos Trailhead, Uinta-Wasatch-Cache National Forest, Utah, USA,, July 30, 2016. Nikon D90, AF-S Nikkor 18-55mm f/3.5-5.6 at 18mm, Manual Exposure mode, f/3.5 for 25 seconds, ISO 3200, processed in Lightroom CC and Photoshop CC.

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