Kilder og lisenser
Alle datakildene bak PolarPeek, med lisens og ønsket kreditering.
PolarPeek bruker bare offisielle og åpent lisensierte kilder. Vi bruker ikke betalte data og videreformidler ikke andres råfiler.
| Data | Source | Licence / terms |
|---|---|---|
| Kp index, 3-day Kp forecast, OVATION aurora model | NOAA Space Weather Prediction Center | US government work, public domain. Credit: NOAA SWPC. No endorsement implied. |
| Kp archive since 1932 | GFZ Helmholtz Centre for Geosciences, Potsdam · Matzka et al. (2021), doi:10.5880/Kp.0001 | CC BY 4.0. The sunspot numbers in the same file (CC BY-NC) are not used. |
| Cloud cover forecast | MET Norway, Locationforecast | CC BY 4.0 and NLOD 2.0. Data from MET Norway. |
| ISS trajectory | NASA, ISS Trajectory Data | US government work, public domain. |
| Positions, phases, eclipses, seasons | astronomy-engine by Don Cross | MIT licence. |
| Meteor shower parameters | International Meteor Organization working list | Facts; our own text. |
| Constellation boundaries and names | International Astronomical Union | Facts; our own text. |
| Fonts | Fraunces, Inter Tight via Fontsource | SIL Open Font License 1.1. |