Day: June 10, 2018

Five-Years Ago (10-June-2013) — Baltic Sea

Gone to See Europe. Semester at Sea Spring 2013 Enrichment Voyage on the MV Explorer. Day 45: At Sea between Stockholm and Copenhagen.

Late night or early in the morning (hard to tell this far north when there isn’t much darkness at night) I looked out my cabin window on the MV Explorer and saw the electric blue Noctilucent clouds. I read about them before (http://www.spaceweather.com/), but had never seen them.  The clouds are ice crystals that are very high that you can only see for a short time when the sun is below the horizon. One theory is the crystals are nucleated when micro-meteors pass through the upper atmosphere. We were in the Baltic Sea traveling from Stockholm to Copenhagen and the sun doesn’t set until very late I set up a camera in my cabin and started taking pictures.(Nikon D4 camera, 28 mm f/1.8 lens (ISO 200 or 800, 28 mm, f/1.8, 1 sec)). The composite images were generated using Photoshop CC (statistics, maximum) the way I do generate star trails. I was impressed that you can see the star trails looking north, even though this is a composite of images taken on a moving ship at sea. The seas were pretty calm that night (early morning).

Noctilucent Clouds Over the Baltic Sea. From my cabin on the MV Explorer while traveling from Stockholm to Copenhagen. Composite of 99 images taken with a Nikon D4 camera and 28 mm f/1.8 lens (ISO 200, 28 mm, f/1.8, 1 sec). Raw image processed with Capture One Pro, and Photoshop CC (statistics, maximum). (David J Mathre)
Noctilucent Clouds Over the Baltic Sea. From my cabin on the MV Explorer while traveling from Stockholm to Copenhagen. Composite of 99 images taken with a Nikon D4 camera and 28 mm f/1.8 lens (ISO 200, 28 mm, f/1.8, 1 sec). Raw image processed with Capture One Pro, and Photoshop CC (statistics, maximum). (David J Mathre)


Noctilucent Clouds Over the Baltic Sea. From my cabin on the MV Explorer while traveling from Stockholm to Copenhagen. Composite of 33 images taken with a Nikon D4 camera and 28 mm f/1.8 lens (ISO 800, 28 mm, f/1.8, 1 sec). Raw image processed with Capture One Pro, and Photoshop CC (statistics, maximum). (David J Mathre)
Noctilucent Clouds Over the Baltic Sea. From my cabin on the MV Explorer while traveling from Stockholm to Copenhagen. Composite of 33 images taken with a Nikon D4 camera and 28 mm f/1.8 lens (ISO 800, 28 mm, f/1.8, 1 sec). Raw image processed with Capture One Pro, and Photoshop CC (statistics, maximum). (David J Mathre)


Noctilucent Clouds Over the Baltic Sea. From my cabin on the MV Explorer while traveling from Stockholm to Copenhagen. Composite of 27 images taken with a Nikon D4 camera and 28 mm f/1.8 lens (ISO 800, 28 mm, f/1.8, 1 sec). Raw image processed with Capture One Pro, and Photoshop CC (statistics, maximum). (David J Mathre)
Noctilucent Clouds Over the Baltic Sea. From my cabin on the MV Explorer while traveling from Stockholm to Copenhagen. Composite of 27 images taken with a Nikon D4 camera and 28 mm f/1.8 lens (ISO 800, 28 mm, f/1.8, 1 sec). Raw image processed with Capture One Pro, and Photoshop CC (statistics, maximum). (David J Mathre)