Skyscape - David Mathre Photography

Monday (13-August-2012) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Perseid Meteor Shower. I know that I said that I was going to go out to get more images of Clearwing Hummingbird moths, but the sky was finally clear last night and I had an opportunity to view the Perseid Meteor Shower. I set up two cameras on the back deck — a Nikon D4 camera with a 16 mm f/2.8 fisheye and a Nikon D800 camera with a 14-24 mm f/2.8 lens. Each was set to take 30 sec images (ISO 400, f/2.8). With the D800 camera and 14-24 lens I took the time to take a set of images to find out where I got the best focus for stars at infinity. For the 16 mm fisheye lens I just used infinity on the lens. This was a mistake. The images I got with the 14-24 lens where I spent the time to test the focus were a lot better, especially with the 32 MB sensor on the D800 camera.

The first image below is a single exposure with a meteor trail using the D800 & 14-24 mm lens. I really don’t understand the physics of other images on the internet of the Perseid Meteor Shower that show long exposures of the night sky (1-6 hours) that show multiple meteor trails where both the stars and the ground/landscape don’t move.

I have included several ~1 hour star trail images that are composites of the 30 second images (using the Startrails.exe program). The sky in New Jersey is not that dark, and the glow in the bottom of the image is the light from Princeton and Trenton. If you look close, several do show 1 or more meteor trails that were visible in New Jersey.

Perseid Meteor Trail. Summer Night Sky in New Jersey. Image taken with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec). (David J Mathre) — Perseid Meteor Trail. Image taken with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec). (David J Mathre)

Startrails Looking For Perseid Meteors. Summer Night Sky in New Jersey. Composite of images taken between 2113h and 2200h with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre) — Startrails Looking For Perseid Meteors. Composite of images taken between 2113h and 2200h with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre)

Startrails Looking For Perseid Meteors. Summer Night Sky in New Jersey. Composite of images taken between 2200h and 2300h with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre) — Startrails Looking For Perseid Meteors. Composite of images taken between 2200h and 2300h with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre)

Startrails Looking For Perseid Meteors. Summer Night Sky in New Jersey. Composite of images taken between 2300h and 2400h with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre) — Startrails Looking For Perseid Meteors. Composite of images taken between 2300h and 2400h with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre)

Startrails Looking For Perseid Meteors. Summer Night Sky in New Jersey. Composite of images taken between 0000h and 0100h with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre) — Startrails Looking For Perseid Meteors. Composite of images taken between 0000h and 0100h with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre)

Startrails Looking For Perseid Meteors. Summer Night Sky in New Jersey. Composite of images taken between 0100h and 0200h with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre) — Startrails Looking For Perseid Meteors. Composite of images taken between 0100h and 0200h with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre)

Startrails Looking For Perseid Meteors. Summer Night Sky in New Jersey. Composite of images taken between 0200h and 0313h with a Nikon D800 and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre) — Startrails Looking For Perseid Meteors. Composite of images taken between 0200h and 0313h with a Nikon D800 camera and 14-24 mm f/2.8 lens (ISO 400, 14 mm, f/2.8, 30 sec) using the Startrails program. (David J Mathre)

Four-Years Ago (26-July-2008) — Colorado

Summertime in Colorado.

Summer Panorama — Cloud and Sky Reflections at a Lake in Arapaho National Wildlife Refuge. The air was clear in northern Colorado, and the sky very blue.

Summer Panorama Cloud and Sky Reflections at a Lake in Arapaho National Wildlife Refuge. Composite of 3 images taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1/100 sec). (David J Mathre)

Thursday (28-June-2012) — New Jersey

Montgomery Township New Jersey Independence Day Fireworks.

Montgomery Township in New Jersey typically has an Independence Day fireworks celebration several days before the 4th of July. This year it was almost a week earlier. I have a great location near my house that has a view that is above the high school where the fireworks are launched. This was the first time I was able to use the new high-resolution Nikon D800 to photograph a fireworks display. In all I had five cameras set up to record the event. Individual images can be viewed here.

Montgomery Township Fireworks. Image taken with a Nikon D800 camera and 200 mm f/2 lens (ISO 100, 200 mm, f/11, 8 sec). (David J Mathre)

Tuesday (27-March-2012) — New Jersey

Early Spring Night Sky over New Jersey. NASA ATREX Mission. Early Morning Sky Lit Up By Five NASA Sounding Rockets.

Early this morning NASA launched five sounding rockets from Wallops Island, Virginia over a seven minute period to study the jet stream in the upper atmosphere at the edge of space. Once the rockets reached the thermosphere they were set to release trimethyaluminum that would react to create a cloud of aluminum oxide. This mission has been canceled several times waiting for clear skies from New Jersey to South Carolina. I set up a Nikon D3x camera with a 14-24 mm f/2.8 wide angle lens and pointed it south-east to capture an image every minute starting just after midnight to see if I could to catch something from the mission. The rockets were launched starting just before 5 AM (EDT).

The following is a composite of 40 images combined using the startrails program showing the release from all 5 rockets. You see the star trails, a couple of jet trails, all five of the ATREX rocket cloud releases and as a bonus a meteor trail.

NASA ATREX Jet Stream Study Lights up The Night Sky. Composite of 40 images taken with a Nikon D3x and 14-24 mm f/2.8 lens (ISO 100, 14 mm, f/2.8, 59 sec) processed using DxO Pro, and Startrails. (David J Mathre)

One-Year Ago (27-March-2011) — California

Gone to See California. Day 8: Death Valley Spring 2011 Photography Workshop with Michael Mariant.

Early Morning Panorama of the Sand Dunes at Mesquite Flats in Death Valley National Park. I used four images taken during the Spring Workshop in Death Valley last year to create a panorama view. The raw images were initially processed using Capture One Pro and then sharpened using Focus Magic. The first panorama was created using AutoPano Giga. The resulting file was 16205 x 3420 pixels (54″ x 11.4″ @ 300 dpi). The image was enhanced with NIK Color Efex Pro (Pro Contrast) and converted to jpg with Photoshop CS5. When examined closely there was a problem at the transition between images. The second panorama was created using PTGui Pro. In this case the resulting file was 14539 x 3894 pixels (48.5″ x 13 ” @ 300 dpi). The image was enhanced with NIK Color Efex Pro (Pro Contrast) and converted to jpg with Photoshop CS5. The third version was converted to B&W with NIK Silver Efex Pro (Fine Art) and converted to jpg with Photoshop CS5. Images best viewed in full screen mode.

Early Morning Sand Dune Panorama. Composite of 4 images taken with a Nikon D3x and 45 mm f/2.8 PC-E lens (ISO 100, 45 mm, f/16, 1/60 sec). Images processed with Capture One Pro, Focus Magic, AutoPano Giga, NIK Color Efex Pro 2, and converted for web with Photoshop CS5. (David J Mathre) — Early Morning Sand Dune Panorama. Composite of 4 images taken with a Nikon D3x and 45 mm f/2.8 PC-E lens (ISO 100, 45 mm, f/16, 1/60 sec). Images processed with Capture One Pro, Focus Magic, AutoPano Giga, NIK Color Efex Pro 2, and converted for web with Photoshop CS5.