Six-Years Ago (07-August-2010) — California

Gone to See America August 2010 Road Trip. Day 7: Eastern Sierra Photography Workshop with Michael Mariant. CARMA Radio Telescopes.

Star Trails looking north viewed from the CARMA Radio Telescope Array. CARMA is the Combined Array for Research in Millimeter Wave Astronomy run by Caltech, Berkeley, Univ Indiana Urbana, and Univ Maryland. It is located in the High Desert at Cedar Flats in the Inyo Mountains near Bishop, California. Composite of 180 images taken with a Nikon D3s camera and 24 mm f/1.4 lens (ISO 800, 24 mm, f/2, 30 sec). Raw images processed with Capture One Pro, and Images combined using Photoshop CC (Statistics, Maximum).

According to an article in Wikipedia the telescopes ceased operation in April 2005

Star Trails looking north viewed from the CARMA Radio Telescope Array. Composite of 180 images taken with a Nikon D3s camera and 24 mm f/1.4 lens (ISO 800, 24 mm, f/2, 30 sec). Raw images processed with Capture One Pro, and Images combined using Photoshop CC (Statistics, Maximum). (David J Mathre)
Star Trails looking north viewed from the CARMA Radio Telescope Array. Composite of 180 images taken with a Nikon D3s camera and 24 mm f/1.4 lens (ISO 800, 24 mm, f/2, 30 sec). Raw images processed with Capture One Pro, and Images combined using Photoshop CC (Statistics, Maximum). (David J Mathre)

One-Year Ago (06-August-2015) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Startrails looking north and looking south. The moon was nearly full. North view: Composite of 177 images taken with a Nikon D800 camera and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/5.6, 120 sec). South view: Composite of 182 images taken with a Nikon D810a camera and 165 mm f/2.8 fisheye lens (ISO 200, 165 mm, f/5.6, 120 sec). Raw images processed with Capture One Pro and Photoshop CC. Composite created with Scripts, Statistics, Maximum).

Summer Startrails Looking North. Nearly full moon. Backyard Nature in New Jersey. Composite of 182 images taken with a Nikon D800 camera and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/5.6, 120 sec). Raw images processed with Capture One Pro and Photoshop CC. Composite created with Scripts, Statistics, Maximum) (David J Mathre)
Summer Startrails Looking North. Nearly full moon. Composite of 177 images taken with a Nikon D800 camera and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/5.6, 120 sec). (David J Mathre)
Summer Startrails Looking South. Nearly full moon. Backyard Nature in New Jersey. Composite of 182 images taken with a Nikon D810a camera and 16 mm f/2.8 fisheye lens (ISO 200, 116 mm, f/5.6, 120 sec). Raw images processed with Capture One Pro and Photoshop CC. Composite created with Scripts, Statistics, Maximum) (David J Mathre)
Summer Startrails Looking South. Nearly full moon. Composite of 182 images taken with a Nikon D810a camera and 16 mm f/2.8 fisheye lens (ISO 200, 116 mm, f/5.6, 120 sec). (David J Mathre)

Three-Years Ago (06-August-2013) — Greenland

Gone to See Iceland 2013 Photography Safari with Mike Hagen. Day 8: Icelandic Air Return Flight from Iceland.

Greenland From 35000 Feet. Return Flight from Iceland. Image taken with a Nikon 1 V2 camera and 10 mm f/2.8 lens (ISO 160, 10 mm, f/9, 1/640 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CC.

Greenland From 35000 Feet. Return Flight from Iceland. Image taken with a Nikon 1 V2 camera and 10 mm f/2.8 lens (ISO 160, 10 mm, f/9, 1/640 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CC. (David J Mathre)
Greenland From 35000 Feet. Return Flight from Iceland. Image taken with a Nikon 1 V2 camera and 10 mm f/2.8 lens (ISO 160, 10 mm, f/9, 1/640 sec). (David J Mathre)

Two-Years Ago (05-August-2014) — Baltic Sea

Gone to See Europe 2014. Day 66: Semester at Sea, Summer 2014 Semester Voyage. Baltic Sea.

Summer Baltic Sea Rain Clouds at Dawn.  From the deck of the MV Explorer at 04:30. Composite of 13 images taken with a Fuji X-T1 camera and Zeiss 32 mm f/1.8 lens (ISO 1600, 32 mm, f/2.8, 1/30 sec). Raw images processed with Lightroom, Autopano Giga Pro, Capture One, Define, Perfect Resize, and Photoshop CC.

Summer Baltic Sea Rain Clouds at Dawn from the MV Explorer. Semester at Sea, Summer 2014 Voyage. Composite of 13 images taken with a Fuji X-T1 camera and Zeiss 32 mm f/1.8 lens (ISO 1600, 32 mm, f/2.8, 1/30 sec). Raw images processed with Lightroom, Autopano Giga Pro, Capture One, Define, Perfect Resize, and Photoshop CC. (David J Mathre)
Summer Baltic Sea Rain Clouds at Dawn from the MV Explorer. Composite of 13 images taken with a Fuji X-T1 camera and Zeiss 32 mm f/1.8 lens (ISO 1600, 32 mm, f/2.8, 1/30 sec).  (David J Mathre)

Two-Years Ago (04-August-2014) — Sweden

Gone to See Europe 2014. Day 65: Semester at Sea, Summer 2014 Semester Voyage. Stockholm Archipelago.

Departing Stockholm on the MV Explorer. Time-lapse Video with the Semester at Sea Alma Mater “Off to Sea — The World” by John M Rosenberg.