Skyscape - David Mathre Photography

Seven-Years Ago (23-August-2012) — Canada

Gone to see Europe. Semester at Sea. Fall 2012 Semester Voyage on the MV Explorer. Day 01: Embark and Depart from Halifax, Canada.

The students boarded the MV Explorer in shifts beginning at 08:00. It was an efficient process, and most everyone was on board by 11:00. We were told that after lunch that there would be a mandatory evacuation drill. Everyone was supposed to get their life-jacket and report to their evacuation station wearing long pants, long shirt, shoes, and a hat. Once we got to our station, the ship staff did a roll call to make sure everyone was accounted for and present. The drill is required before the ship can leave port. After the drill was completed, we were ready to leave at 17:00. Most everyone lined up on the open decks to watch the departure. The parents and relatives that came were all lined up on the roof of the port terminal. Michael Mariant was set up to take a series of images from Deck 7 that will be combined into a time-lapse video for the entire Fall 2012 Voyage.

Weather permitting I plan to take an early morning image during dawn or sunrise, and an evening image at sunset or during dusk. I did this exercise during the previous two Enrichment voyages on the MV Explorer, and got images with great colors.

Sunrise over the Lighthouse Island in Halifax Harbor from the M/V Explorer. Image taken with a Nikon 1 V1 camera and 10-30 mm VR lens (ISO 100, 16.3 mm, f/4.2, 1/800 sec). (David J Mathre) — Sunrise over the Lighthouse Island in Halifax Harbor from the MV Explorer. Image taken with a Nikon 1 V1 camera and 10-30 mm VR lens (ISO 100, 16.3 mm, f/4.2, 1/800 sec). (David J Mathre)

Sailboat and Lighthouse in the Halifax Harbor. Image taken with a Nikon 1 V1 camera and 30-110 mm VR lens (ISO 100, 93.5 mm, f/8, 1/320 sec). Watercolor effect applied using a Topaz Simplify/Painterly filter. (David J Mathre)

Evacuation/Lifeboat Drill. Image taken with a Leica V-Lux 30 camera (ISO 400, 4.3 mm, f/4, 1/15 sec) (David J Mathre)

M/V Explorer Departure from Halifax, Nova Scotia. Image taken with a Nikon N1 V1 camera and 10 mm f/2.8 lens (ISO 100, 10 mm, f/4.5, 1/640 sec). (David J Mathre) — MV Explorer Departure from Halifax, Nova Scotia. Image taken with a Nikon N1 V1 camera and 10 mm f/2.8 lens (ISO 100, 10 mm, f/4.5, 1/640 sec). (David J Mathre)

Sunset Day 1 Fall Semester at Sea Voyage from Deck 7 of the M/V Explorer in the Atlantic Ocean. Image taken with a Nikon 1 V1 camera and 10 mm f/2.8 lens (ISO 100, 10 mm, f/4.5, 1/500 sec). (David J Mathre) — Sunset from Deck 7 of the MV Explorer in the Atlantic Ocean. Image taken with a Nikon 1 V1 camera and 10 mm f/2.8 lens (ISO 100, 10 mm, f/4.5, 1/500 sec). (David J Mathre)

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.

Monday (12-August-2019) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Night three trying to capture some of the Perseid Meteor Shower. Again with two cameras out 1) Nikon D810a camera with a 8-15 mm fisheye lens (ISO 800, 8 mm, f/4, 8 sec) and 2) Nikon D850 with a 19 mm f/4 PC-E lens (ISO 800, 19 mm, f/4, 8 sec). The sky was mostly clear, but the moon was bright. After reviewing the images, I did see a few meteor trails. Mainly in the fisheye images where more of the sky was covered.

Click on the above image to access the individual images in the slideshow

Daily Electric Energy Used (56.1 kWh) from Sense and Daily Solar Electric Energy Produced (75.2 kWh) from SolSystems and Locus Energy. Electrical Energy surplus for the day was 19.1 kWh.

Current Weather Conditions

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Sunday (11-August-2019) — New Jersey

Backyard Summertime Night Sky Over New Jersey.

Night two trying to capture some of the Perseid Meteor Shower. This time with two cameras out 1) Nikon D810a camera with a 8-15 mm fisheye lens (ISO 800, 8 mm, f/4, 8 sec) and 2) Nikon D850 with a 19 mm f/4 PC-E lens (ISO 800, 19 mm, f/4, 8 sec). After reviewing the images, not must luck. In order to process this many images I have four Surface computers running full time and at full power. By full power, I mean all four cores on the Microsoft Surface Studio 2 (with a dedicated video processor) are running hot — close to 100 °C (45 watts). The computer automatically shuts down if these temperatures are exceeded. The Microsoft Surface Book 2 (with a dedicated video processor) has this bad habit when being stressed to run only on the battery until the battery runs out even though it is plugged into an external power supply. So I had to go back and forth between the four computers to monitor how they were doing. My power usage for the day was nearly 4 kWh larger just because of the extra processing work being done by the computers and servers. Just glad it was a bit cooler outside and the sun was out most of the day to charge the solar panels.

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

Daily Electric Energy Used (51.5 kWh) from Sense and Daily Solar Electric Energy Produced (77.1 kWh) from SolSystems and Locus Energy. Just glad that it was cooler outside, even though the sun was out most of the day. Electrical Energy surplus for the day was 25.6 kWh. The weekly stats 384 kWh used, 440 kWh generated for a surplus of 56 kWh.

Current Weather Conditions

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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.