Published February 16, 2023 | Version v1
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Suomi 100 satellite's images: The auroral and the star images

Creators

  • 1. Aalto University

Description

Spacecraft: Suomi 100


Instrument: Camera

  • White light RGB camera
  • Resolution: 2048 x 1536 pixels
  • Angle of view: 43.6° x 33.4° (horizontal x vertical)

On-board data processing:

  • Debayering
  • Color correction
  • Gamma correction (gamma=2.2, gamma-break: 0.1)
  • JPEG compression

Data: Three images

    1. The auroral image: Original (ID: 001229, rotated 180°)

  • File: img001229.jpg
  • Imaging time: January 22, 2019, 18:08:20 UT
  • Location: 62.17°N, 47.64°E, 582865 m (WGS84)
  • Attitude: heading -31.21°, tilt 68.89°, roll -1.85°
  • Integration time: 2.4 seconds
  • Sensor gain: x128

    2. The auroral image: Processed version (see Knuuttila et al., JoSS, 2022, for details)

  • File: img001229_processed.png
  • Inverted on-board data processing (excl. debayering)
  • Subtracted the star image (ID: 001264) to compensate warm pixel effec


    3. The original star image used for background subtraction (ID: 001264)

  • File: img001264.jpg
  • Imaging time: January 23, 2019, 18:13 UT
  • Attitude: declination -1.3°, right ascension 97.1°, celestial north clock angle -21.8° (J2000)
  • Integration time: 1.6 seconds
  • Sensor gain: x32

Files

img001229.jpg

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Additional details

References

  • Kallio et al. (2023). Auroral imaging with combined Suomi 100 nanosatellite and ground-based observations: A case study. (submitted)
  • Knuuttila, O., Kallio, E. Partamies, N., Syrjäsuo, M., Kauristie, K., Sofieva, V., et al. 760 (2022). In-space Calibration of Nanosatellite Camera, The Journal of Small Satellites, Vol. 11, 761 No3.