Tuesday, November 5, 2013

Mars Orbiter Mission payloads

Mars Orbiter Mission carries five payloads:
For atmpospheric studies:
Layman Alpha Photometer (LAP): It is an absorption cell photometer. It measures the relative abundance of deuterium and hydrogen from Lyman-alpha emission in the Martian upper atmosphere (typically Exosphere and exobase). Measurement of D/H (Deuterium to Hydrogen abundance ratio) allows us to understand especially the loss process of water from the planet.
Methan Sensors for Mars (MSM): It is designed to measure methane (CH4) in the Martian atmosphere with PPB accuracy and map its source. Data is acquired only over illuminated scene as the sensor measures the reflected solar radiation. Methane concentration in the Martian atmosphere undergoes spatial and temporal variations.
For particle environment studies:
Mars Exospheric Neutral Composition Analyser (MENCA): It is a quadruple mass spectrometer capable of analysing the neutral composition in the range of 1 to 300 amu with unit mass resolution. The heritage of this payload is from Chandra's Altitudinal Composition Explorer (CHACE) payload.
For surface imaging studies:
Mars Colour Camera (MCC): This tri-colour camera gives images and information about the surface mission and composition of Martian surface. They are useful to monitor the dynamic event and weather of Mars. MCC will also be used for probing the two satellites of Mars - Phobos and Deimos. It also provides the context information for other science payloads.
Thermal Infrared Imaging Spectrometer (TIS): This will measure the thermal emission and can be be operated during both day and night. Temperature and emissivity are the two basic physical parameters estimated from thermal emission measurement. Many minerals and soil types have characteristic spectra in TIR region. TIC can map surface composition and mineralogy of Mars.

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