Friday (17-January-2025) — New Jersey

Nine-Years Ago Today. Afternoon yoga in the sun on the aft deck of the MV World Odyssey. (17-Jan-2016, Semester at Sea)

Cold Winter Night Sky.

The forecast for the night was intermittent clouds. The waning gibbous moon is reducing in brightness (86% illuminated) and not rising until later. I programed the “Plan my Night” sequences on the Vespera telescopes to start soon after dark and hoping for long periods with clear skies. with several objects away from the moon and will see what I get depending on the clouds. During later part of the night, I have the telescopes looking at the moon. I also set up the Nikon D9 camera with an 8-15 mm fisheye lens to take a sequence of images of the night sky with the full Vespera family of telescopes in the foreground. These images were then used to create the following time-lapse video. You can see the night starting out cloudy, then clear to a good period of time. Later, when the moon is high in the sky there is a 22° ring or halo around the moon. This is caused by high level ice crystals. The telescopes automatically close before the sun rises. The time-lapse video is best viewed in the dark and expanded to full scale. Images captured by the telescopes to follow.

Thursday (13-January-2022) — New Jersey

Wintertime Backyard Nature in New Jersey.

Birds of the day viewed at the birdfeeder and in the backyard: Blue Jay, Dark-eyed Junco.


Birds of the day. Individual images in the slideshow are available in my PhotoShelter Gallery.

While taking the recycling out last night I noticed a moon ring (22° halo) in the sky.

moon halo. (David J Mathre)
Moon Ring (22° halo). Image taken with a Lieca Q2 monochrome camera with a 28 mm f/1.7 lens (ISO 1600, 28 mm, f/1.7, 1/8 sec). (David J Mathre)

Daily Electric Energy Used (69.4 kWh) from Sense. Daily Solar Electric Energy Produced (28.4 kWh) from Sense and SolSystems. Sunny. Geothermal HVAC heating the house. Deficit of 41.0 kWh.

Friday (15-February-2008) — New Jersey

Backyard Winter Night Sky in New Jersey. Moon Ring and Orion.

The 22° Halo around the moon is caused by refraction of ice crystal high in the atmosphere.

Winter Night Sky over New Jersey. Moon, moon ring, Orion. Image taken with a Nikon D3 and 17-35 mm f/2.8 lens (ISO 200, 17 mm, f/2.8, 30 sec). (David J Mathre)
Winter Night Sky over New Jersey. Moon, moon ring, Orion. Image taken with a Nikon D3 camera and 17-35 mm f/2.8 lens (ISO 200, 17 mm, f/2.8, 30 sec).