MARS-96     ROBOTIC SPACECRAFT MISSION TO MARS. Brief description
Table of contents
Inroduction
Scientific goals
Scheme of the mission
Spacecraft
Orbiter
Payload of the Orbiter
Scientific goals of
the experiments
Description of
the instruments
Small Stations
Penetrators
Conclusion
 Experiment: SOYA

SOLAR OSCILLATION PHOTOMETER



Main objectives:study of the Sun's internal structure by helioseismology method from measurements of solar brightness oscillations.

Methodology: long-term, continuous, and high-accuracy photometry of the Sun along the Earth-to-Mars trajectory.

Instrument consists of a solar photometer with a filter at 845 nm with a 5 nm passband, a two-axis solar sensor built around CCD-arrays for making corrections of photometric data by changing the spacecraft orientation. The SOYA and SPICAM instruments have a common electronics unit.



Main characteristics:
brightness resolutions I/ITwo Detectors NaI(Tl), 10-6
FOV 1,5°
number of pixels in a CCD array 1024 pixels
angle measurement accuracy 20 sec of arc
Mass 1 kg





Cooperation:: Ukraine, Russia, France, Switzerland

Contact persons:A.V.Bruns (PI) bruns@crao.crimoa.ua


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