Thursday (16-December-2021) — New Jersey

Autumn Backyard Nature in New Jersey.

Birds of the day viewed at the birdfeeder and in the backyard: Mourning Dove, Turkey Vulture, Downy Woodpecker, Blue Jay, Black-capped Chickadee, House Finch, Dark-eyed Junco.


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

Red Rover time-lapse video of the day. Today’s project was to attach the Woods PD-25 post-hole digger on Red Rover. Took a while to get it installed. Read the safety manual several times. When completed, dug the first of 170 holes for the deer fence project. Small issue of a bolt rubbing one of the safety shields, and a shear bolt falling out (didn’t shear, nut must not have been on tight enough). Tech from Belle Mead motors stopped by to fix the rubbing issue.


Daily Electric Energy Used (50.3 kWh) from Sense. Daily Solar Electric Energy Produced (27.5kWh) from Sense and SolSystems. Sun and clouds. Geothermal HVAC heating the house. Deficit of 22.8 kWh.

Tuesday (14-December-2021) — New Jersey

Autumn Backyard Nature in New Jersey.

Birds of the day viewed at the birdfeeder and in the backyard: Mourning Dove, Blue Jay, Black-capped Chickadee, Tufted Titmouse, European Starling, Northern Mockingbird, House Sparrow, House Finch, Dark-eyed Junco. I think this is the first time I have observed a House Sparrow at my house.


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

Nervous fox checking out the patio. Hope it finds some of the rats.

Daily Electric Energy Used (53.0 kWh) from Sense. Daily Solar Electric Energy Produced (31.3 kWh) from Sense and SolSystems. Mostly sunny. Geothermal HVAC heating the house. Deficit of 21.7 kWh.

Sunday (12-December-2021) — New Jersey

Autumn Backyard Nature in New Jersey.

Birds of the day viewed at the birdfeeder and in the backyard: Mourning Dove, Northern Flicker, Blue Jay, Black-capped Chickadee, European Starling, American Robin, House Finch, Dark-eyed Junco, Common Grackle, Northern Cardinal.


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

Night sky and star trails using a Leica Q2 Monochrome camera. One limitation is the camera takes a 2nd blank (shutter closed) exposure to subtract out sensor noise anytime the exposure is > 4 seconds or the ISO is > 100. With other cameras from Nikon and Fuji, I am able to turn the long exposure noise reduction off, Also, when taking an interval collecting both DNG and JPG the camera stops collecting images after 5 minutes (60 exposures). When recording DNG images, the camera collects 50 minutes (600 exposures). Images were processed with Capture One Pro, and the star trails created using PhotoShop (statistics, maximum).

Star Trails. (David J Mathre)
Moon and Star Trails. Composite of 60 images taken with a Leica Q2 Monochrome camera and 28 mm f/1.7 lens (ISO 100, 28 mm, f/2, 4 seconds). (David J Mathre)
Startrails. (David J Mathre)
Moon, Star, and Jet Trails. Composite of 600 images taken with a Leica Q2 Monochrome camera and 28 mm f/1.7 lens (ISO 100, 28 mm, f/2, 4 seconds). (David J Mathre)

Daily Electric Energy Used (53.7 kWh) from Sense. Daily Solar Electric Energy Produced (30.6 kWh) from Sense and SolSystems. Mostly sunny. Geothermal HVAC heating the house. Deficit of 23.1 kWh.

Weekly Electric Energy Used (400 kWh) from Sense. Weekly Solar Electric Energy Produced (128 kWh) from Sense and SolSystems. Geothermal HVAC heating the house. Deficit of 272 kWh.

Friday (10-December-2021) — New Jersey

Autumn Backyard Nature in New Jersey.

Birds of the day viewed at the birdfeeder and in the backyard: Black-capped Chickadee, House Finch, American Goldfinch.


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

Daily Electric Energy Used (59.5 kWh) from Sense. Daily Solar Electric Energy Produced (20.0 kWh) from Sense and SolSystems. Cloudy. Geothermal HVAC heating the house. Deficit of 39.5 kWh.

Wednesday (08-December-2021) — New Jersey

Autumn Backyard Nature in New Jersey.

Birds of the day viewed at the birdfeeder and in the backyard: Mourning Dove, Blue Jay, Black-capped Chickadee, House Finch, Dark-eyed Junco.

I am trying to figure out the problem with the following slideshow. (10-Decmber-2021 Update: PhotoShelter provided a fix to the slideshow problem).


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

Time-lapse Videos of the Day with Red Rover. (1) Completed assembly of the 4th Shelter Logic storage shed. The frame remained up overnight (no strong winds) prior to attaching the ground anchors. This one has a rounded roof, and we will see if it does better when the snow comes. (2) Assembled a Titan 3-Point Subsoiler Single Tine Ripper, then used it to pull out some old agricultural fabric.

Daily Electric Energy Used (65.8 kWh) from Sense. Daily Solar Electric Energy Produced (10.7 kWh) from Sense and SolSystems. Cloudy. Geothermal HVAC heating the house. Deficit of 55.1 kWh.