DIFOS

Solar Photometer

Institutes:
Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN)

Principal Investigators:
Prof. V.N.Oraevsky

• scientific goals
• technical parameters
• technical description
• results
• data
• publications
• contacts address

Scientific goals

Technical parameters

• Continuous registration of the light flux intensity from the whole Solar disk in three optical spectral channels:
  • 550 nm with bandpass of 100 nm
  • 750 nm with bandpass of 100 nm (formed by glass optic filters)
  • 400 nm - 1100 nm (defined by spectral characteristics of silicon photosensor)
• Relative light flux resolusion - 2*10^-5 Io for 16 seconds of signal integrating during measuring cycle
• Output data in 16-bit binary code
• Thermostating of photosensors
• Pointing to the Sun within the accuracy of 10 arc. minutes supported by orientation system of the satellite
• Power consumption - 20 W

Contact address