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| Titel |
Auroral all-sky camera calibration |
| VerfasserIn |
F. Sigernes, S. E. Holmen, D. Biles, H. Bjørklund, X. Chen, M. Dyrland, D. A. Lorentzen, L. Baddeley, T. Trondsen, U. Brandstrom, E. Trondsen, B. Lybekk, J. Moen, S. Chernouss, C. S. Deehr |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2193-0856
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Instrumentation, Methods and Data Systems ; 3, no. 2 ; Nr. 3, no. 2 (2014-12-10), S.241-245 |
| Datensatznummer |
250115226
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| Publikation (Nr.) |
 copernicus.org/gi-3-241-2014.pdf |
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| Zusammenfassung |
| A two-step procedure to calibrate the spectral sensitivity to visible light
of auroral all-sky cameras is outlined. Center pixel response is obtained by
the use of a Lambertian surface and a standard 45 W tungsten lamp. Screen
brightness is regulated by the distance between the lamp and the screen.
All-sky flat-field correction is carried out with a 1 m diameter integrating
sphere. A transparent Lexan dome at the exit port of the sphere is used to
simulate observing conditions at the Kjell Henriksen Observatory (KHO). A
certified portable low brightness source from Keo Scientific Ltd was used
to test the procedure. Transfer lamp certificates in units of Rayleigh per
Ångstrøm (R/Å) are found to be within a relative error of 2%. An all-sky
camera flat-field correction method is presented with only 6 required
coefficients per channel. |
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