NOKTOsat Satelite Images

Radiance Calibrated Nocturnal Multispectral (RGB true colour) Images taken from the International Space Station (ISS).

The images of the earth at night taken from the International Space station are of the highest quality available. These high resolution photographs were taken by astronauts and are in colour, which means they offer a rare view of the earth at night in its true colours. Understandably, many people are under the impression that such photographs already exist due to the famous Black Marble image by NASA. However, the Black Marble image is a collection of black and white photographs to which a fake colour technique was applied, making it an artistic, instead of a realistic representation of the earth at night.

Although the ISS images are the highest colour resolution available, the originals have not yet been scientifically processed. Fortunately, due to a collaboration between the Complutense University of Madrid, NASA and ESA, NOKTOsat is now able to offer a scientific data reduction pipeline for the ISS images. NOKTOsat images are radiance calibrated in three channels RGB corrected by Vignetting nonlinear response of the cameras and other technical features that need correction in order to have images of scientific quality.

NOKTOsat images are ideal for tracking human activity globally. All of the following fields have at some point benefitted from the use of black and white nocturnal satellite images. Now, Noktosat offers satellite images in colour that provide far more quality data than what was previously available. Some examples of uses are:

  • Geographical studies – Population estimation, Land use, Cultural difference
  • Economical studies – Tracking economic activity, GDP estimation, Poverty assessment, Oil production
  • Environmental studies – Energy efficiency, Air pollution, bio diversity protection, Illegal fishing, Sky brightness estimation, light pollution, Co2 level estimations
  • Human health – Cancer research, Mosquito related illnesses,
  • Safety and security – Civil safety, Monitoring disaster areas
  • Policy making – regulations for light pollution, construction, traffic safety)
  • Commercial purposes
  • Big data analysis