IPHIR: the Helioseismology experiment on the PHOBOS mission
Creators
- 1. European Space Agency, 75 - Paris (France)
- 2. Crimean Astrophysical Observatory Nauchny (USSR)
- 3. Laboratoire de Physique Stellaire et Planetaire, 91 - Verrieres-le-Buisson (France)
- 4. European Space Research and Technology Centre, Noordwijk (Netherlands)
- 5. Hungarian Academy of Sciences, Budapest. Central Research Inst. for Physics
Description
IPHIR (Inter Planetary Helioseismology by IRradiance measurements) is a solar irradiance experiment on the USSR planetary mission PHOBOS to Mars and its satellite Phobos. The sensor is a three channel sunphotometer (SPM) which measures the solar spectral irradiance at 335, 500 and 865 nm with a precision of better than 1 ppm. A two axis solar sensor (TASS) is added to monitor the moderate solar pointing of the spacecraft. A microprocessor based data processing unit controls the sensor operation, acquires the data and performs the data compression for the transmission at a mean rate of 1 bit/s. The two spacecrafts have been launched on July 7th and 12th, 1988. The experiment on PHOBOS I gathered data during 45 days before the S/C was lost, the one on PHOBOS II is still operating. The data recovery is excellent with virtually 100 percent coverage
Additional details
Publishing Information
- Imprint Title
- Seismology of the sun and sun-like stars
- Imprint Pagination
- 691 p.
- Journal Page Range
- p. 359-362.
- Report number
- ESA-SP--286
Conference
- Title
- Symposium on seismology of the sun and sun-like stars.
- Dates
- 26-30 Sep 1988.
- Place
- Tenerife (Spain).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 20062539
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- OSCILLATION MODES; SOLAR RADIATION; SPACE VEHICLES; SUN
- Descriptors DEC
- MAIN SEQUENCE STARS; RADIATIONS; STARS; STELLAR RADIATION