Startrails - David Mathre Photography

Wednesday (18-January-2022) — New Jersey

Backyard Nighttime Sky Over New Jersey.

The pre-dawn sky was clear with the green Comet C/2022 E3 (ZTF) high enough above the horizon to the northeast to be viewed from my patio using a Vespera telescope-camera.

Vespera Deep Sky Observations. Comet C/2022 E3 (ZTF). JPG images processed with Topaz AI, followed by Capture One Pro. Individual images in the slideshow are available in my PhotoShelter Gallery.

During the day, I used the Vespera telescope fitted with a solar filter to view the many sunspots currently visible. For solar observations, the Vespera takes individual JPEG images which I put together as a short time-lapse video. There were periods of time that clouds got in the way.

I set up two cameras to record star trails. One pointing north (Nikon Z9) using a CamRanger II controller for long (300 sec) exposures. The other camera (Hallelblad X2D) pointing south. You can see the clouds coming and going.

Star and Jet trails looking south. Images taken with a Hasselblad X2D camera and 30 mm f/3.5 lens (ISO 64, 30 mm, f/8, 323 s). Images processed with Phocus and the composites created using PhotoShop (scripts, statistics, maximum). Individual images in the slideshow are available in my PhotoShelter Gallery.

Star and Jet trails looking north. Images taken with a Nikon Z9 camera, FTZ adapter, and 19 mm f/4 PC-E lens (ISO 64, 19 mm, f/8, 300 s). CamRanger II intervalometer used to control the camera (bulb, 5 min exposure). Images processed with Capture One Pro and the composites created using PhotoShop (scripts, statistics, maximum). Individual images in the slideshow are available in my PhotoShelter Gallery.

The sky was partially clear before midnight. The Stellina and Vespera telescope/cameras were set up to capture images of the North America Nebula (NGC 7000), Polaris (North Star), Rosette Nebula (NGC 2237), Satellite Cluster (NGC 2244), Cone Nebula/Christmas Tree Cluster (NGC 2264). The clouds interfered with several of the images. It appears that the observation stations automatically stop collecting and processing images at some point when the clouds become problematic.

For the following images, I processed the final JPG image with Topaz AI, followed by Capture One Pro. For the raw TIFF images, I needed to use Capture One Pro first, followed by Topaz AI. Follow the link to my PhotoShelter Gallery for larger views of the images.

Stellina and Vespera Deep Sky Observations. JPG images processed with Topaz AI, followed by Capture One Pro. Individual images in the slideshow are available in my PhotoShelter Gallery.

Stellina and Vespera Deep Sky Observations. TIF images processed with Capture One Pro followed by Topaz AI. Individual images in the slideshow are available in my PhotoShelter Gallery.

Daily Electric Energy Used (80.0 kWh) from Sense. Daily Solar Electric Energy Produced (23.9 kWh) from Sense. Sun and clouds. Deficit of 56.1 kWh.

One-Year Ago (11-October-2016) — New Jersey

Indoor Abstract Art

While hand washing the dishes, I noticed a large number of bubbles in one pot. As I moved the colors kept changing. I assumed it was due to diffraction of a mono-molecular layer of soap. but wasn’t sure if I was going to be able to take an image that would capture the beauty of the colors, and the symmetry of the bubble packing. After a lot of trial and error, I was able to obtain some interesting images.

Soap bubbles and light diffraction. Image taken with a Nikon D800 camera and 60 mm f/2.8 macro lens (ISO 400, 60 mm, f/4, 1/60 sec). (David J Mathre)

Backyard Autumn Night Sky in New Jersey — Star Trails

View looking south from my backyard. Night sky star and jet trails. Composite of 173 images taken with a Nikon D810a camera and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/8, 120 sec). Images processed with Capture One Pro (including conversion to B&W), then the composite generated using Photoshop CC (statistics, maximum). If you look closely, there is at least one meteor trail.

Night Sky Star and Jet trails After Midnight. Composite of 173 images taken with a Nikon D810a camera and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/8, 120 sec). (David J Mathre)

One-Year Ago (07-October-2016) — New Jersey

Backyard Autumn Night Sky in New Jersey

Star and jet trails looking south from my backyard. Composite of 40 images taken with a Nikon D810a camera and 24 mm f/3.5 PC-E lens (ISO 800, 24 mm, f/4, 120 sec) and processed using Capture One Pro and Photoshop CC (statistics, maximum).

Star and jet trails, southern view. Composite of 40 images taken with a Nikon D810a camera and 24 mm f/3.5 PC-E lens (ISO 800, 24 mm, f/4, 120 sec). (David J Mathre)

Sunday (04-June-2017) — New Jersey

Backyard Early Morning and Daytime Spring Nature in New Jersey.

I got up really early this morning to set a camera up to try and catch a NASA launch from the Wallops Flight Facility in Virginia. The sounding rocket was supposed to release some chemicals to form artificial clouds that would glow blue, green, and red. Unfortunately, the launch was scrubbed due to high altitude clouds. Mission Update Five-years ago I caught a previous launch from the Wallops Flight Facility. I did get enough images for a composite star-trails image. Later in the morning I took my lonely Leica T camera out to check out the new wildflowers in my backyard.

Startrails looking southeast. Backyard night sky in New Jersey. Composite of 30 images taken with a Nikon D810a camera and 16-35 mm f/4 lens (ISO 200, 16 mm, f/4, 120 sec). (David J Mathre)

Five-Years Ago (03-January-2012) — New Jersey

Backyard Winter Night Sky in New Jersey. Star Trails looking North and South.

Star and jet trails looking north and south from my deck. Raw images processed with Capture One Pro, and the composite created using Photoshop CC (scripts, statistics, maximum).