Indian Tricolour Placed on the Moon
on Pandit Jawaharlal Nehru's Birthday
In a historic event, the Indian space programme
achieved a unique feat today (November 14, 2008) with the placing of Indian
tricolour on the Moons surface on Pandit Jawaharlal Nehrus birthday. The Indian flag
was painted on the sides of Moon Impact Probe (MIP), one of the 11 payloads of
Chandrayaan-1 spacecraft, that successfully hit the lunar surface today at
20:31 hrs (8:31 pm) IST. This is the first Indian built object to reach the
surface of the moon. The point of MIPs impact was near the Moons South Polar
Region. It may be recalled that the modern Indian space programme was initiated
in 1962 when Pandit Jawaharlal Nehru was the Prime Minister of India.
Weighing 34 kg at the time of its launch onboard Chandrayaan-1, the box shaped
MIP carried three instruments a video imaging system, a radar altimeter and a
mass spectrometer. The video imaging system was intended to take the pictures
of the moons surface as MIP approached it. The radar altimeter was included to
measure the rate of descent of the probe to the lunar surface. Such instruments
are necessary for future lunar soft landing missions. And, the mass
spectrometer was for studying the extremely thin lunar atmosphere.
MIPs 25 minute journey to the lunar surface
began with its separation from Chandrayaan-1 spacecraft at 20:06 hrs (8:06 pm)
IST. This was followed by a series of automatic operations that began with the
firing of its spin up rockets after achieving a safe distance of separation
from Chandrayaan-1. Later, the probe slowed down with the firing of its retro
rocket and started its rapid descent towards the moons surface. Information
from the its instruments was radioed to Chandrayaan-1 by MIP. The spacecraft
recorded this in its onboard memory for later readout. Finally, the probe had a
hard landing on the lunar surface that terminated its functioning.
Thus, Indias very first attempt to send a probe to the moons surface from its
spacecraft orbiting the moon has been successfully concluded.
With the switching ON of two of Chandrayaan-1s payloads Terrain Mapping
Camera (TMC) and Radiation Dose Monitor (RADOM) on its journey to moon and
with MIPs successful impact on the lunar surface today, it is planned to
switch ON and test the remaining eight payloads of the spacecraft in the coming
few days.
It may be recalled that Chandrayaan-1 was successfully launched by PSLV-C11 on
October 22, 2008 from Indias spaceport at Satish Dhawan Space Centre SHAR,
Sriharikota into its intended initial elliptical orbit around the Earth.
Following this, the spacecrafts orbit was raised in steps and it was made to
pass near the moon by repeatedly firing its 440 Newton liquid engine. After
Chandrayaan-1s entry into its planned lunar orbit on November 8, 2008, the
orbital height was reduced in steps to its intended operational altitude of 100
km from the lunar surface.
Since its launch, the health and orbit of Chandrayaan-1 is being continuously
monitored from the Spacecraft Control Centre of ISROs Telemetry, Tracking and
Command Network (ISTRAC) at Bangalore with critical support from antennas of
Indian Deep Space Network (IDSN) at Byalalu. IDSN antennas have also received
the images and scientific information gathered by TMC, RADOM, and more
recently, by MIP.