Saturday, August 29, 2009

Mission Chandrayaan-1 ended today !

At 01:30 today, ISRO has lost contact with the Chandrayaan-1 spacecraft orbiting the moon. Chandrayaan-1 was launched on 22nd October 2008 and carried 11 instruments on board including 5 Indian and 6 foreign instruments. The total cost of the mission was 386 crore.
According to ISRO Chandrayaan-1 has done its job technically 100% and scientifically 90-95%. Chandrayaan-1 has completed 312 days in orbit, making over 3400 orbits around the moon.
But the mission was scheduled to be of 2 yr duration and it could last only 10 months.
Currently ISRO is conducting a detail review of the telemetry data of the spacecraft to find the cause of the problem. In April 2009, the star sensor of the Chandrayaan-1 spacecraft has developed a malfunction and failed. The star sensor was responsible for determining the altitude of the spacecraft and for orientation. ISRO has been able to overcome the malfunction using antenna-pointing mechanism and on board gyroscopes.

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