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.

Wednesday (27-February-2008) — Utah

Elderhostel “Photography in the Southwest” Workshop Day 3. Sand Island Petroglyphs.

The Elderhostel “Photography in the Southwest” workshop was based at Kelly Place B&B just outside of Cortez Colorado. This is a great location in McElmo Canyon, quiet and remote. It borders Canyon of the Ancients National Monument. The following images of Petroglyphs and modern graffiti were taken at the Sand Island Petroglyphs Bureau of Land Management (BLM) site in Utah.

Sand Island Petroglyphs. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens (ISO 200, 200 mm, f/11, 1/320 sec) (David J Mathre) — Sand Island Petroglyphs. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 200 mm, f/11, 1/320 sec)

Sand Island Petroglyphs + Modern Graffiti. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens (ISO 200, 70 mm, f/11, 1/250 sec) (David J Mathre) — Sand Island Petroglyphs + Modern Graffiti. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 70 mm, f/11, 1/250 sec)

Sand Island Petroglyphs + Modern Graffiti. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens (ISO 200, 116 mm, f/11, 1/250 sec) (David J Mathre) — “Custer Died For Your Sins” Sand Island Petroglyphs + Modern Graffiti. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 116 mm, f/11, 1/250 sec)

Sand Island Petroglyphs. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens (ISO 200, 200 mm, f/11, 1/250 sec) (David J Mathre) — Sand Island Petroglyphs. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 200 mm, f/11, 1/250 sec)

Tuesday (26-February-2008) — Colorado

Elderhostel “Photography in the Southwest” Workshop Day 2.

The Elderhostel/Road Scholar “Photography in the Southwest” workshop was based at Kelly Place a B&B just outside of Cortez Colorado. This is a great location in McElmo Canyon, quiet and remote. It borders Canyon of the Ancients National Monument. The following images were taken in and around Kelly Place during the second day of the workshop.

Sunbeam in Kiva. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 14-24 mm f/2.8 lens (ISO 200, 20 mm, f/2.8, 1/20 sec) (David J Mathre) — Sunbeam in Kiva. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens (ISO 200, 20 mm, f/2.8, 1/20 sec) (David J Mathre)

Photographer checking his filter for dust. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D2xs and 400 mm f/2.8 lens (ISO 100, f/2.8, 1/750 sec) (David J Mathre) — Photographer checking his filter for dust. Image taken with a Nikon D2xs camera and 400 mm f/2.8 lens (ISO 100, f/2.8, 1/750 sec) (David J Mathre)

Cat Jumping off Roof for Breakfast. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 85 mm f/1.4D lens (ISO 200, f/8, 1/1000 sec) (David J Mathre) — Cat Jumping off Roof for Breakfast. Image taken with a Nikon D3 camera and 85 mm f/1.4D lens (ISO 200, f/8, 1/1000 sec) (David J Mathre)

Window to Sleeping Ute. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 VR lens (ISO 200, 24 mm, f/22, 1/200 sec) (David J Mathre) — Window to Sleeping Ute. Image taken with a Nikon D3 camera and 24-70 mm f/2.8 VR lens (ISO 200, 24 mm, f/22, 1/200 sec) (David J Mathre)

Red Glass. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 VR lens (ISO 200, 70 mm, f/22, 1/50 sec) (David J Mathre) — Red Glass. Image taken with a Nikon D3 camera and 24-70 mm f/2.8 VR lens (ISO 200, 70 mm, f/22, 1/50 sec) (David J Mathre)

Yellow Glass and Sleeping Utet. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 VR lens (ISO 200,70 mm, f/22, 1/250 sec) (David J Mathre) — Yellow Glass and Sleeping Utet. Image taken with a Nikon D3 camera and 24-70 mm f/2.8 VR lens (ISO 200,70 mm, f/22, 1/250 sec) (David J Mathre)

Green Glass. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 VR lens (ISO 200, 70 mm, f/22, 1/125 sec) (David J Mathre) — Green Glass. Image taken with a Nikon D3 camera and 24-70 mm f/2.8 VR lens (ISO 200, 70 mm, f/22, 1/125 sec) (David J Mathre)

Blue Glass. Elderhostel "Southwest Photography" Workshop Day 2. Kelly Place Cortez Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 VR lens (ISO 200, 70 mm, f/22, 1/160 sec) (David J Mathre) — Blue Glass. Image taken with a Nikon D3 camera and 24-70 mm f/2.8 VR lens (ISO 200, 70 mm, f/22, 1/160 sec) (David J Mathre)

Monday (25-February-2008) — Colorado

Elderhostel “Photography in the Southwest” Workshop Day 1.

The Elderhostel/Road Scholar “Photography in the Southwest” workshop was based at Kelly Place B&B just outside of Cortez Colorado. This is a great location in McElmo Canyon, quiet and remote. It borders Canyon of the Ancients National Monument. The following images were taken in and around Kelly Place during the first day of the workshop.

Window looking out at Sleeping Ute Mountain and wood ladder to the Kiva at Kelley's Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens and interior fill flash (ISO 200, 16 mm, f/11, 1/250 sec). (David J Mathre) — Window looking out at Sleeping Ute Mountain and wood ladder to the Kiva at Kelley’s Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens and interior fill flash (ISO 200, 16 mm, f/11, 1/250 sec). (David J Mathre)

Wood ladder to the underground Kiva at Kelley's Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens (ISO 200, 24 mm, f/11, 1/400 sec). (David J Mathre) — Wood ladder to the underground Kiva at Kelley’s Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens (ISO 200, 24 mm, f/11, 1/400 sec). (David J Mathre)

Sleeping Ute Mountain and red back-hoe on an early winter morning at Kelley's Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens (ISO 200, 22 mm, f/16, 1/10 sec). (David J Mathre) — Sleeping Ute Mountain and red back-hoe on an early winter morning at Kelley’s Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 14-24 mm f/2.8 lens (ISO 200, 22 mm, f/16, 1/10 sec). (David J Mathre)

Weeds with morning dew on at Kelley's Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 130 mm, f/2.8, 1/200 sec). (David J Mathre) — Weeds with morning dew on at Kelley’s Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 130 mm, f/2.8, 1/200 sec). (David J Mathre)

Old tree on a hill at Kelley's Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 70 mm, f/16, 1/125 sec). (David J Mathre) — Old tree on a hill at Kelley’s Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 70 mm, f/16, 1/125 sec). (David J Mathre)

Juniper berries at Kelley's Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 70 mm, f/11, 1/800 sec). (David J Mathre) — Juniper berries at Kelley’s Place near Cortez, Colorado. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens (ISO 200, 70 mm, f/11, 1/800 sec). (David J Mathre)

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).