Author: David Mathre

I am a scientist by training (Eckerd College, BSc; Caltech, Ph.D.). I worked for 27 years as a Chemist in the Pharmaceutical Industry developing processes to manufacture medicines for human and animal health. I now spend my time as a photographer and world traveler. My interests include the natural world, wildlife, landscapes, sky, and seascapes, travel, and astrophotography. I look for unique ways of viewing the world and presenting my images. I have traveled to over 55 countries in six continents, often on Semester at Sea voyages. While at home in New Jersey, I spend time on home renovation and expansion of a wildflower garden/meadow.

Sunday (24-February-2008) — Colorado

Winter in Colorado: Mesa Verde National Park.

On the way from Boulder, Colorado to Kelly Place a B&B just outside of Cortez, Colorado I stopped for a few hours at Mesa Verde National Park. While at Mesa Verde, I met up with my father (Loren) and brother (Erik). We would be spending the next three days attending the Elderhostel/Road Scholar “Photography in the Southwest” workshop.

Winter Panorama while driving in Mesa Verde National Park. Image taken with a Nikon D3 and 14-24 f/2.8 lens (ISO 200, 22 mm, f/11, 1/500 sec) (David J Mathre) — Winter Panorama while driving in Mesa Verde National Park. Image taken with a Nikon D3 camera and 14-24 f/2.8 lens (ISO 200, 22 mm, f/11, 1/500 sec) (David J Mathre)

Mesa Verde National Park. Image taken with a Nikon D300 and 18-200 VR lens (ISO 320, 44 mm, f/8, 1/250 sec) (David J Mathre) — Mesa Verde National Park. Image taken with a Nikon D300 camera and 18-200 VR lens (ISO 320, 44 mm, f/8, 1/250 sec) (David J Mathre)

Stone Grain Grinding Tool. Mesa Verde National Park. Image taken with a Nikon D300 and 18-200 VR lens (ISO 200, 135 mm, f/11, 1/250 sec) (David J Mathre) — Stone Grain Grinding Tool. Mesa Verde National Park. Image taken with a Nikon D300 camera and 18-200 VR lens (ISO 200, 135 mm, f/11, 1/250 sec) (David J Mathre)

Icicles. Mesa Verde National Park. Image taken with a Nikon D300 and 70-200 mm f/2.8 VR lens (ISO 200, 135 mm, f/5, 1/160 sec) (David J Mathre) — Icicles. Mesa Verde National Park. Image taken with a Nikon D300 camera and 70-200 mm f/2.8 VR lens (ISO 200, 135 mm, f/5, 1/160 sec) (David J Mathre)

Wednesday (20-February-2008) — New Jersey

Backyard Winter Night Sky in New Jersey: Lunar Eclipse.

The moon does turn red during a lunar eclipse, even if it is only a partial eclipse.

Luna Eclipse over New Jersey. Image taken with a Nikon D300 and 80-400 mm VR lens (ISO 400, 400 mm, f/5.6, 1 sec). (David J Mathre) — Luna Eclipse over New Jersey. Image taken with a Nikon D300 camera and 80-400 mm VR lens (ISO 400, 400 mm, f/5.6, 1 sec).

Friday (15-February-2008) — New Jersey

Backyard Winter Night Sky in New Jersey. Moon Ring and Orion.

The 22° Halo around the moon is caused by refraction of ice crystal high in the atmosphere.

Winter Night Sky over New Jersey. Moon, moon ring, Orion. Image taken with a Nikon D3 and 17-35 mm f/2.8 lens (ISO 200, 17 mm, f/2.8, 30 sec). (David J Mathre) — Winter Night Sky over New Jersey. Moon, moon ring, Orion. Image taken with a Nikon D3 camera and 17-35 mm f/2.8 lens (ISO 200, 17 mm, f/2.8, 30 sec).

Sunday (10-February-2008) — New Jersey

Backyard Winter Nature in New Jersey: Fresh Snow.

Afternoon walkabout with a macro lens. Fresh snow on red holly berries and fall leaves.

Red Holly Berries with Fresh Snow. Winter in New Jersey. Image taken with a Nikon D3 and 200 mm f/4 macro lens (ISO 200, f/8, 1/60 sec) (David J Mathre)

Fresh Snow on Leaf. Winter in New Jersey. Image taken with a Nikon D3 and 200 mm f/4 macro lens (ISO 200, f/5.6, 1/60 sec) (David J Mathre)

Sunday (03-February-2008) — Colorado

Outdoor Winter Nature in Colorado: Rocky Mountain National Park.

The sky was clear, so drove from Boulder to Rocky Mountain National Park. The roads in the park are open, so I spent another day taking pictures in this great National Park. It is cold, and the river is frozen. I am getting good use out of my Golden Eagle Pass.

Winter, Rocky Mountain National Park, Colorado. Image taken with a Nikon D3 and 14-24 mm f/2.8 lens (ISO 200, 24 mm, f/11, 1/640 sec) (David J Mathre)