Taking advantage of several nights with clear skies. For comparison to the Star Trail images yesterday, I set up two high-resolution full-frame cameras to capture the night sky from my patio. 1) Leica SL2 camera with 16-36 mm lens (ISO 200, 16 mm, f/4, 60 sec). 2) Nikon D810a with 8-15 mm fisheye lens (ISO 200, 11 mm, f/4, 120 sec). The Leica (2 batteries) captured 152 images before running out of power. The outdoor temperature dropped to 36° F. Then Nikon camera (2 batteries) captured 174 images before taking the camera back inside (could have gone on longer). The first two Star Trail composite images were created with the jpg “out-of-the-camera” image files using PhotoShop CC (scripts, statistics, maximum). The second two Star Trail composite images were created with the DNG or RAW image files processed with Capture One Pro and then using PhotoShop CC (scripts, statistics, maximum).
Star Trails looking south from my backyard patio. Composite of 154 image taken with a Leica SL2 camera and 16-35 mm lens (ISO 200, 16 mm, f/4, 60 seconds). JPG images processed with PhotoShop CC (scripts, statistics, maximum). (David J Mathre)Star Trails looking Up from my backyard patio. Composite of 172 images taken with a Nikon D810a camera and 8-15 mm fisheye lens (ISO 200, 11 mm, f/4, 120 seconds). JPG images processed with PhotoShop CC (scripts, statistics, maximum). (David J Mathre)Star Trails looking south from my backyard patio. Composite of 154 image taken with a Leica SL2 camera and 16-35 mm lens (ISO 200, 16 mm, f/4, 60 seconds). DNG images processed with Capture One Pro and PhotoShop CC (scripts, statistics, maximum). (David J Mathre)Star Trails looking Up from my backyard patio. Composite of 172 images taken with a Nikon D810a camera and 8-15 mm fisheye lens (ISO 200, 11 mm, f/4, 120 seconds). RAW images processed with Capture One Pro and PhotoShop CC (scripts, statistics, maximum). (David J Mathre)
Daily Electric Energy Used (35.8 kWh) from Sense. Daily Solar Electric Energy Produced (53.6 kWh) from Sense and SolSystems. Sunny with a few clouds. Geothermal HVAC system off. A surplus of 17.8 kWh. Notice the hump in the afternoon solar — has to do with the Sycamore tree shading the roof mid-afternoon
Weekly Electric Energy Used (273 kWh) from Sense. Daily Solar Electric Energy Produced (337 kWh) from Sense and SolSystems. More sun this week, and the house open with the Geothermal HVAC system off. A surplus of 64 kWh.
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.
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