Five-Years Ago (11-August-2011) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Multi-Exposure of Waxing Gibbous Moon over New Jersey. Image taken with a Nikon D3x camera and 500 mm f/4 VR telephoto lens (ISO 400, 500 mm, f/4 1/400 sec). Nine images taken at 2 minute intervals. Raw image processed with Capture One Pro 6, and Photoshop CS5.

Multi-Exposure of Waxing Gibbous Moon over New Jersey. Image taken with a Nikon D3x and 500 mm f/4 VR telephoto lens (ISO 400, 500 mm, f/4 1/400 sec). Nine images taken at 2 minute intervals. Raw image processed with Capture One Pro 6, and Photoshop CS5.. (David J Mathre)
Multi-Exposure of Waxing Gibbous Moon over New Jersey. Image taken with a Nikon D3x camera and 500 mm f/4 VR telephoto lens (ISO 400, 500 mm, f/4 1/400 sec). (David J Mathre)

Six-Years Ago (10-August-2010) — Utah

Gone to See America August 2010 Road Trip. Day 10: Great Basin National Park, Nevada to Park City, Utah.

After a long day driving, I arrived in Park City. It was off season, and the Marriott Hotel I was staying at upgraded me to a room with two balconies and more square feet than my house. I was able to set up a camera on each balcony to do night sky star trails. One camera looking north and up to Polaris, the other looking east.

Star Trails from a Hotel in Park City, Utah. Composite of 154 images taken with a Nikon D3s camera and 45 mm f/2.8 PC-E lens (ISO 400, 45 mm, f/4, 30 sec). Raw images processed with Capture One Pro and the composite made using the Photoshop CC statistics (maximum) module. (David J Mathre)
Star Trails looking north and up. Composite of 154 images taken with a Nikon D3s camera and 45 mm f/2.8 PC-E lens (ISO 400, 45 mm, f/4, 30 sec). Raw images processed with Capture One Pro and the composite made using the Photoshop CC statistics (maximum) module. (David J Mathre)
Star Trails from a Hotel in Park City, Utah. Composite of 233 images taken with a Nikon D300 camera and 16 mm f/2.8 fisheye lens (ISO 400, 16 mm, f/2.8, 30 sec). Raw images processed with Capture One Pro and the composite made using the Photoshop CC statistics (maximum) module. (David J Mathre)
Star Trails from a Hotel in Park City, Utah. Composite of 233 images taken with a Nikon D300 camera and 16 mm f/2.8 fisheye lens (ISO 400, 16 mm, f/2.8, 30 sec). Raw images processed with Capture One Pro and the composite made using the Photoshop CC statistics (maximum) module. (David J Mathre)

One-Year Ago (08-August-2015) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Summer Star Trails. (1) Looking South. Composite of 167 images taken with a Nikon D810A camera and 16 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/4, 120 sec). (2) Looking North. Composite of 134 images taken with a Nikon D800 camera and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/4, 120 sec). Raw images processed with Capture One Pro and Photoshop CC. Composite created with Scripts, Statistics, Maximum)

Summer Star Trails. Looking South. Composite of 167 images taken with a Nikon D810A camera and 16 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/4, 120 sec). Raw images processed with Capture One Pro and Photoshop CC. Composite created with Scripts, Statistics, Maximum) (David J Mathre)
Summer Star Trails. Looking South. Composite of 167 images taken with a Nikon D810A camera and 16 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/4, 120 sec). (David J Mathre)
Summer Star Trails. Looking North. Composite of 134 images taken with a Nikon D800 camera and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/4, 120 sec). Raw images processed with Capture One Pro and Photoshop CC. Composite created with Scripts, Statistics, Maximum) (David J Mathre)
Summer Star Trails. Looking North. Composite of 134 images taken with a Nikon D800 camera and 10.5 mm f/2.8 fisheye lens (ISO 100, 10.5 mm, f/4, 120 sec). (David J Mathre)

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

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

A combination of still and time-lapse videos of the Night Sky and Milky Way viewed from the grounds of 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. The research facility was shut down in 2015.

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

Milky Way Viewed From the CARMA Radio Telescope Array. CARMA is the Combined Array for Research in Milimeter 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. The image was taken with a Nikon D3x camera and 16 mm f/2.8 fisheye lens (ISO 1600, 16 mm, f/2.8, 30 sec).

According to an article in Wikipedia the telescopes ceased operation in April 2015.

Milky Way Viewed From the CARMA Radio Telescope Array. CARMA is the Combined Array for Research in Milimeter 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. The image was taken with a Nikon D3x and 16 mm f/2.8 fisheye lens (ISO 1600, 16 mm, f/2.8, 30 sec). (David J Mathre)
Milky Way Viewed From the CARMA Radio Telescope Array. Image taken with a Nikon D3x camera and 16 mm f/2.8 fisheye lens (ISO 1600, 16 mm, f/2.8, 30 sec). (David J Mathre)