Our aim is to make all data collected by our projects openly available under the CC-BY-4.0 licence. Due to extensive quality control and a large backlog, this will take some time. On this page will keep an updated list of the available datasets. Please remember to use the full reference to the dataset if you use in your publications. We would also appriate to be contacted if you plan to use the data, even though this is not required by the CC-BY licence.
Up in the fra North, in Ny-Ålesund on Svalbard, there is a little light observatory hut, which we call “ArcLight”. Under one of it’s transparent domes we have deployed several light sensor. Among the various sensors there is also an all-sky camera.
The camera (Canon EOS 5D Mark III) is equipped with a fish-eye lens with a focal length set to 8 mm with aperture manually set to open (f/4) to ensure maximum sensitivity (Canon EF 8-15mm f/4L), providing a 180° image of the atmosphere (only possible with a full-size sensor). Both shutter speed (exposure time, ranging from 0.000125 to 30 seconds) and ISO (sensitivity, ranging from 100 at Midnight Sun period and up to 6400 during Polar Night) are set to auto. White balance manually set to “day light”.
The two videos to the right are composed of all pictures of 2020 (upper panel) and single photos from 11:30 each day, respectively.
Links for data download and references can be found below.