India's moon mission Chandrayaan [Images]-1 was a dream come true for every Indian and it was a perfect launch. But, since the last few days, ISRO scientists have been noticing that there is a slight rise in temperature on the surface of the Chandrayaan.

However, ISRO scientists told rediff.com that there was no cause for concern and this generally happens due to something called as 'moon summer'

The multi-layered insulated blanket on the Chandrayaan maintains the temperature between 0 and 40 degree Celsius. However, due to moon summer, the ISRO noticed that there had been a 10 degree rise in the temperature on the surface.

ISRO scientists, who reassure that there is no cause for panic, add the temperature is expected to cool off in the next two weeks following which things will come to normal.

The immediate fall-out due to the rise in temperature will be that the high energy X Ray Spectra Meter and the Sara (Sub KeV Atom Reflecting Analyser) will not be switched on immediately.

Following the launch, the nine instruments being carried aboard the Chandrayaan had been switched on, but the remaining two as mentioned above will be switched on only once the temperature comes down.

ISRO says that it will be better to switch on these two instruments once the temperature comes down as these are high-voltage instruments.

The SARA once switched on will image the moon surface using low energy neutral atoms as diagnostics in the energy range 10eV-2keV to address the following scientific objectives:

For India, this is a relatively new concept considering the fact that this is the first moon mission. ISRO had been gathering details about moon summer from other countries which have had moon missions in the past. However this time it is a first-hand experience for ISRO.

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