Three-Years Ago (17-August-2016) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Night Time Thunderstorm. Two minute time-lapse video. Moon, Clouds, Lightning. Approximately 3000 Images taken between midnight and 4 AM from my backdoor using a Nikon D810A camera and 24 mm f/3.5 PC-E lens (ISO 800, 24 mm, f/4, 4 sec). At one point I had to move the camera away from the door during a heavy downpour. Time-lapse video created from the in camera jpg images using Photoshop CC. This was the fourth night in a row that we have had thunderstorms.

Saturday (10-August-2019) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

The weather forecast indicated the night sky would be relatively clear for a couple of nights. I hope to capture some of the annual Perseid Meteor Shower. The moon would be out for part of each night, so not ideal conditions. But I figured I would try. I set up a Nikon D810a camera with a 8-15 mm fisheye lens (ISO 800, 12 mm, f/4, 8 sec) to capture images all night (2550 images in total). It takes a lot of time to process all of the images for a Time-lapse video, and several Star Trail images. Lots of Jet Trails. How many Meteor Trails do you see?  The Time-lapse Video is best viewed in a dark room.


Click on the above image to access the individual images in the slide show.


Daily Electric Energy Used (61.8 kWh) from Sense and Daily Solar Electric Energy Produced (73.43 kWh) from SolSystems and Locus Energy. I needed to clean the oven, and cooked dinner in the oven adding 3.7 kWh to the total used. Daily net surplus 11.6 kWh.

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Five-Years Ago (04-August-2014) — Sweden

Gone to See Europe 2014. Day 65: Semester at Sea, Summer 2014 Semester Voyage. Stockholm Archipelago.

Departing Stockholm on the MV Explorer. Time-lapse Video with the Semester at Sea Alma Mater “Off to Sea — The World” by John M Rosenberg.

Thursday (25-July-2019) — New Jersey

Summertime Backyard Nature in New Jersey.

One of the wildflower meadows with lots of Zinnia flowers in bloom has attracted dozens and dozens of butterflies and clearwing moths. I set up a Garmin VIRB-360 camera for a time-lapse video of the wildflower meadow. [Note – the post will be updated later with the time-lapse video.] I also took a series of images with a Nikon 1 V3 camera with a 70-300 mm VR lens. Butterflies: Monarch, Tiger Swallowtail, and Common Buckeye. Moth: Clearwing Hummingbird (Hemaris thysbe). While walking back to the house I saw a Ruby-throated Hummingbird feeding on the taller Cosmos flowers. I was happy that I had this camera & lens since I was able to get a series of pictures from 10 meters away without scaring the hummingbird away.


Butterflies. Click on the above image to access the individual slideshow images in my gallery.



Hummingbird Clearwing (Hemaris thysbe) moth. Click on the above image to access the individual slideshow images in my gallery.



Hummingbird Clearwing (Hemaris thysbe) moth. Click on the above image to access the individual slideshow images in my gallery.



Ruby-Throated Hummingbird. Click on the above image to access the individual slideshow images in my gallery.



Ruby-Throated Hummingbird. Click on the above image to access the individual slideshow images in my gallery.



Ruby-Throated Hummingbird. Click on the above image to access the individual slideshow images in my gallery.


Daily Electric Energy Used (54.9 kWh) from Sense and Daily Solar Electric Energy Produced (81.5 kWh) from SolSystems and Locus Energy. The amount of Electric Energy used was up a bit, mainly due to a load of laundry. It was a sunny day so the solar electricity production was up for a surplus of 26.6 kWh. Helps to make up for some of the previous very hot (increased usage) and rainy (decreased solar production) days.

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Thursday (18-April-2019) — New Jersey

Springtime Backyard Nature in New Jersey.

I noticed the first of the tulips flowers was beginning to open. I set up a camera to take an image every 1 minute during the day to make a time-lapse video. It looks like several more tulips will be opening over the next few days. Now to keep the deer away…

Tulip Flower Opening. Image taken with a Fuji X-T3 camera and 200 mm f/2 OIS lens (DAVID J MATHRE)
Tulip Flower Opening. Image taken with a Fuji X-T3 camera and 200 mm f/2 OIS lens (DAVID J MATHRE)


Tulip Flower Opening. Image taken with a Fuji X-T3 camera and 200 mm f/2 OIS lens (DAVID J MATHRE)
Tulip Flower Opening. Image taken with a Fuji X-T3 camera and 200 mm f/2 OIS lens (DAVID J MATHRE)

Daily Power Use (56.6 kWh) and Solar Production (47.8 kWh) from Sense.

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