The Moon Impact Probe (MIP), developed by ISRO, is a small instrument that the Chandrayaan-1 will carry and eject when it reaches 100 km orbit around the moon.
Update: The Chandrayaan-1 moon impact probe crash-lands on lunar surface; mission successful
The dimensions of the Moon Impact Probe are 375 mm x 375 mm x 470 mm.
The 29-kg MIP will carry three instruments.
1) High resolution mass spectrometer that will be used to measure the components of a very thin lunar atmosphere as the MIP free falls to the lunar surface.
2) C-Band Radar Altimeter that will be used to measure the altitude of the probe regularly. It will also be used to demonstrate and qualify technology for future landing missions.
3) Video Imaging system that will acquire pictures of the surface of the moon from the descending probe
When the Moon Impact Probe is ejected, an on-board motor will fire for two seconds and slow the Moon Impact Probe’s descent velocity to 75 metres per second. Once the Moon Impact Probe starts descending to the lunar surface, the Video Imaging system of the Moon Impact Probe will be activated. The images captured by the MIP will provide information to ISRO that will help it decide the landing site it should choose for Chandrayaan-2′s rover.
The MIP aims to demonstrate the technologies required for landing a probe at the desired location on the moon, and to qualify some of the technologies related to future soft landing missions. The Moon Impact Probe will also be used for scientific exploration of the moon at close distance.
The MIP will display the Indian flag to stake its claim as the fourth nation to land on the moon apart from Russia, United States and Japan.
The Moon Impact Probe will hit the rim of the Shackleton crater of the moon at the South Pole in November 2008.
Apart from the Moon Impact Probe, the scientific payload of the Chandrayaan-1 includes five Indian and five foreign instruments.
The other six Indian instruments that Chandrayaan-1 will carry are:
1. The Terrain Mapping Camera (TMC)
2. The Hyper Spectral Imager (HySI)
3. The Lunar Laser Ranging Instrument (LLRI)
4. An X-ray fluorescence spectrometer C1XS
5. A High Energy X-ray/gamma ray spectrometer (HEX)
6. Moon Impact probe(MIP)
The five foreign payloads are:
1. The Sub-keV Atom Reflecting Analyzer (SARA) from ESA
2. The Moon Mineralogy Mapper (M3) from Brown University and JPL
3. A near infrared spectrometer (SIR-2) from ESA
10. S-band miniSAR from the APL at the Johns Hopkins University
11. Radiation Dose Monitor (RADOM-7) from Bulgaria
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