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.

Monday (11-July-2011) — New Jersey

Backyard Summertime Night Sky in New Jersey. Star, Jet, and Firefly Trails.

A composite of 897 images looking south taken after midnight. I used the Startrails program for creating the  composite.

Star, Jet, and Firefly Trails. Summer Night in New Jersey. Image taken with a Nikon D3x and 14 mm f/2.8D lens (ISO 200, 14 mm, f/4, 8 sec). Composite of 980 images combined using the Startrails program. (David J Mathre)
Star, Jet, and Firefly Trails. Summer Night in New Jersey. Image taken with a Nikon D3x and 14 mm f/2.8D lens (ISO 200, 14 mm, f/4, 8 sec). Composite of 980 images combined using the Startrails program.

Second day attempts for a DSLR video of the moon continued to be problematic. It appears that the camera is controlling the exposure and not allowing manual selection of aperture, shutter speed, or ISO. The only way I could get an exposure that was not way over exposed was to add a TC-E III 20 teleconverter (effective 1000 mm).

To confirm that there was not a problem with the camera or lens I took this following single image of the waxing gibbous moon with the same setup (Nikon D3s and 500 mm f/4 VR lens + TC-E III 20 teleconverter (ISO 800, 1000 mm, f/8, 1/200 sec))

Waxing Gibbous Moon (85%). Summer Night in New Jersey. Image taken with a Nikon D3s and 500 mm f/4 VR lens + TC-E III 20 teleconverter (ISO 800, 1000 mm, f/8, 1/200 sec). Raw image processed with Capture One Pro 6, Nik Define 2, and Photoshop CS5 (David J Mathre)
Waxing Gibbous Moon (85%). Summer Night in New Jersey. Image taken with a Nikon D3s and 500 mm f/4 VR lens + TC-E III 20 teleconverter (ISO 800, 1000 mm, f/8, 1/200 sec). Raw image processed with Capture One Pro 6, Nik Define 2, and Photoshop CS5

Sunday (10-July-2011) — New Jersey

Summer Backyard Nighttime Sky in New Jersey. Star, Moon, Jet, and Firefly Trails.

A composite of 980 images looking south taken before midnight. I used the Startrails program for creating the  composite.

I had actually gone out to see what type of video I could take of the moon using the D3s camera and a telephoto lens. The moon phase (according to the US Naval Observatory site) is waxing gibbous (76% illuminated). I started by shooting some single images and found that ISO 200, 500 mm, f/8, 1/50 second should be about right. Even though I had the camera set to shoot in manual mode, all of the images of the moon were way over exposed. It didn’t appear that I had manual control while taking the video. I made sure that the ISO setting was fixed (not Auto), that Active D-Lighting was off, and that the white balance was fixed (4000 K). I need to try this again!

Star, Moon, Jet, and Firefly Trails. Summer Night in New Jersey. Image taken with a Nikon D3x and 14 mm f/2.8D lens (ISO 200, 14 mm, f/4, 8 sec). Composite of 980 images combined using the Startrails program. (David J Mathre)
Star, Moon, Jet, and Firefly Trails. Summer Night in New Jersey. Image taken with a Nikon D3x and 14 mm f/2.8D lens (ISO 200, 14 mm, f/4, 8 sec). Composite of 980 images combined using the Startrails program.

Tuesday (05-July-2011) — New Jersey

Indoor Summer Nature in New Jersey.

A Stink Bug got caught up in a spider’s web.

Stink Bug. Image taken with a Nikon D3x and 105 mm f/2.8 VR Macro + TC-E III 20 teleconverter (ISO 100, 210 mm, f/6.7, 1/60 sec) with SB-900 Flash. Raw image processed with Capture One Pro 6, and Photoshop CS5. (David J Mathre)
Stink Bug. Image taken with a Nikon D3x and 105 mm f/2.8 VR Macro + TC-E III 20 teleconverter (ISO 100, 210 mm, f/6.7, 1/60 sec) with SB-900 Flash. Raw image processed with Capture One Pro 6, and Photoshop CS5.

 

Monday (04-July-2011) — New Jersey

Summertime in New Jersey.

It was a bit foggy this morning after all of the rain and thunderstorms yesterday. I saw this lone rower on the Delaware river out early between Lambertville, New Jersey and New Hope, Pennsylvania.

Rower in the mist. Delaware River between Lambertville and New Hope. Image taken with a Nikon D3x and 105 mm f/2.8 VR macro lens + TC-E III 20 teleconverter (ISO 100, 210 mm, f/9, 1/125 sec). Raw image processed with Capture One Pro 6 and Photoshop CS5. (David J Mathre)
Rower in the mist. Delaware River between Lambertville and New Hope. Image taken with a Nikon D3x and 105 mm f/2.8 VR macro lens + TC-E III 20 teleconverter (ISO 100, 210 mm, f/9, 1/125 sec). Raw image processed with Capture One Pro 6 and Photoshop CS5.

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Four-Years Ago (04-July-2007) — Colorado

Summer in Colorado. Railroad to Pikes Peak.

Four years ago on a lark I drove from Boulder to Colorado Springs and then to Manitou Springs to take the Cog Wheeled Railroad to the summit of Pikes Peak. Little did I know that you needed reservations for the cog rail trip to Pikes Peak, and that all trips were sold out for the day. I was very lucky that someone in line before me was unhappy that their party was not all sitting together and turned in their tickets. Once I got on board the train, I realized that I won the lottery since my ticket was for the front seat. This allowed me to set up a tripod and camera to capture images for a time-lapse video for the train ride. So as not to annoy the other passengers on the train I used a small Gitzo travel tripod, my smallest camera body, and a small lens. Going up the mountain I used a 18-200 mm lens at 18 mm. Going down the mountain my seat was now in the rear of the train looking back. For this I used a 10.5 mm fisheye lens. This was a case of being in the right place at the right time!!!

Steam Engine at Pikes Peak Cog Railroad. Image taken with a Nikon D200 and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/5.6, 1/250 sec). Raw image processed with Capture One Pro, Focus Magic, Topaz Define, and Photoshop CS5. (David J Mathre)
Steam Engine at Pikes Peak Cog Railroad. Image taken with a Nikon D200 and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/5.6, 1/250 sec). Raw image processed with Capture One Pro, Focus Magic, Topaz Define, and Photoshop CS5.