Chandrayaan2, India's second mission to moon, is being targeted for
launch during 2013. Chandrayaan2 will have an orbiter (satellite), a
lander and a rover. Chandrayaan-2 is planned to be launched onboard
Geosynchronous Satellite Launch Vehicle (GSLV) from Satish Dhawan Space
Centre, Sriharikota. While the lander will be provided by Russia, the
orbiter and the rover are being built by ISRO.
The payloads to be flown onboard Chandrayaan2 (orbiter and rover) have
been finalised by a National committee of experts drawn from ISRO centres,
academic institutions and R & D laboratories and Chaired by Prof U R
Rao, Chairman, Advisory Committee on Space Sciences (ADCOS) and former
Chairman of ISRO.
The committee, after detailed deliberations and considering the mission
requirements, weight and power available for scientific payloads, has
recommended five payloads to be flown on the orbiter of which three are
new and two are improved versions of the payloads flown earlier on
Chandrayaan1 orbiter. The committee has also recommended two scientific
payloads on the rover of Chandrayaan 2. Inclusion of additional
payloads, if possible within the mission constraints, will be considered
at a later date following a detailed review.
The five recommended payloads of Chandrayaan-2 orbiter are as follows:
Large Area Soft X-ray Spectrometer (CLASS) from ISRO Satellite Centre
(ISAC), Bangalore and Solar X-ray Monitor (XSM) from Physical Research
Laboratory (PRL), Ahmedabad for mapping the major elements present on the
L and S band Synthetic Aperture Radar (SAR) from Space Applications
Centre (SAC), Ahmedabad for probing the first few tens of meters of the
lunar surface for the presence of different constituents including water
ice. SAR is expected to provide further evidence confirming the presence
of water ice below the shadowed regions of the moon.
Imaging IR Spectrometer (IIRS) from SAC, Ahmedabad for the mapping of
lunar surface over a wide wavelength range for the study of minerals,
water molecules and hydroxyl present.
Neutral Mass Spectrometer (ChACE2) from Space Physics Laboratory
(SPL), Thiruvananthapuram to carry out a detailed study of the lunar
Terrain Mapping Camera2 (TMC2) from SAC, Ahmedabad for preparing a
three-dimensional map essential for studying the lunar mineralogy and
The two scientific payloads on Chandrayaan-2 rover are:
- Laser Induced Breakdown Spectroscope (LIBS) from Laboratory for Electro
Optic Systems (LEOS), Bangalore
- Alpha Particle Induced X ray Spectroscope (APIXS) from PRL, Ahmedabad.
Both the instruments are expected to carry out elemental analysis of the
lunar surface near the landing site.
Chandrayaan-2 spacecraft weighs about 2,650 kg at lift-off of which the
orbiter weight is about 1,400 kg and lander weight is about 1,250 kg.
Development of the subsystems of the orbiter and the rover is in progress
at ISRO centres in Bangalore, Thiruvananthapuram and Ahmedabad.