Cristin-resultat-ID: 1901683
Sist endret: 23. august 2021, 12:46
Resultat
Annet produkt
2021

Pictures from an all-sky camera with hourly resolution from the light observatory at Ny-Ålesund, Svalbard, Norway (complete year 2019)

Bidragsytere:
  • Geir Johnsen
  • Stephen Grant
  • Rune Bjørgum
  • Jonathan Cohen
  • David Mckee
  • Tomasz Piotr Kopec
  • mfl.

Utgiver

UiT The Arctic University of Norway
Tromsø

Om resultatet

Annet produkt
Publiseringsår: 2021
Internasjonalt
html

Klassifisering

Vitenskapsdisipliner

Elektromagnetisme, akustikk, optikk

Emneord

Optikk

Beskrivelse Beskrivelse

Tittel

Pictures from an all-sky camera with hourly resolution from the light observatory at Ny-Ålesund, Svalbard, Norway (complete year 2019)

Sammendrag

UiT The Arctic University of Norway (UiT) and the Norwegian University of Science and Technology (NTNU) established a light observatory at Kings Bay, Ny-Ålesund (Svalbard, Norway) in January 2017. The observatory consists of a range of light sensors including an all sky camera. It is located outside the settlement of Ny-Ålesund, approximately 1 km N-NW of the airport towards Brandalspynten. The array of sensors, including the camera, is mounted on a tripod under a transparent dome. This dataset contains the pictures taken during 2019 at hourly intervals by the 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”. It is remotely controlled by a PC, pictures were stored in a cloud storage. Short gaps in the time series are due to power failures. In this dataset there are two large gaps: 2019-01-09 to 2019-03-08 and 2019-06-24 to 2019-09-25 caused by a crash of the controlling PC which was not monitored at that time. The pictures were primarily intended as a visual quality control of the data from the light sensors (obstructions on the dome, light pollution), but have also been used as a highly sensitive light sensor of its own by extracting data from each picture. Light data from the sensor array is also available on NIRD.

Bidragsytere

Geir Johnsen

  • Tilknyttet:
    Faglig ansvarlig
    ved Institutt for biologi ved Norges teknisk-naturvitenskapelige universitet

Stephen Denis Grant

Bidragsyterens navn vises på dette resultatet som Stephen Grant
  • Tilknyttet:
    Faglig ansvarlig
    ved Institutt for biologi ved Norges teknisk-naturvitenskapelige universitet

Rune Bjørgum

  • Tilknyttet:
    Faglig ansvarlig
    ved Institutt for biologi ved Norges teknisk-naturvitenskapelige universitet

Jonathan Cohen

  • Tilknyttet:
    Faglig ansvarlig
    ved University of Delaware

David Mckee

  • Tilknyttet:
    Faglig ansvarlig
    ved University of Strathclyde
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