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Chandrayaan-2: ISRO Releases First Illuminated Image of Lunar Surface Taken by the Orbiter !

   By : TWINKLE VARSHNEY | TECH TALK

The Indian Space Research Organization (ISRO) released on Thursday the first image of the moon surface captured by the "Infrared Spectroscopy" (IIRS) payload aboard Chandrayaan 2.

“See the first illuminated moon image acquired by the IIRS payload from # Chandrayaan2. IIRS is designed to measure sunlight reflected from the moon in narrow and contiguous spectral channels,” ISRO retweet with the image on his account.

The image covers part of the front of the moon in the northern hemisphere. The picture shows a few notable pits (Sommerfield, Stebbins, and Kirkwood).

Chandrayaan-2 on the IIRS is designed to measure reflected sunlight and a portion of moonlight emitted from the moon's surface in narrow and contiguous spectral channels ranging from ~ 800 - 5000 nm (0.8-5.0 um), ISRO said in a statement.

Grating is used to divide and disperse reflected sunlight (and the emitted component) into different spectral bands.

"The main goal of the International Space Institute is to understand the origin and evolution of the moon in a geological context by mapping the moon and the volatile surface using signatures in the reflected solar spectrum," the space agency said.

"Preliminary analysis indicates that IIRS can measure the differences in the reflected solar radiation reflected on the moon from different types of surface types, ie, the peaks of central peaks (eg Stebbins), crater floors (eg Stebbins and Sommerfield)." For small sprites inside the pit floor of a large pit (e.g. Somerfield) and also the sun-lit inner edges of the pit (e.g. Kirkwood). "

"Changes in spectral radiation are due primarily to the mineral or structural differences in the moon's surface as well as because of the impact of space weather," the space agency said.

Earlier this month, ISRO released photos of the moon's surface clicked on by the Orbiter HD camera (OHRC) aboard Chandrayaan-2.

The space agency lost contact with Lander Vikram, which was supposed to land on the bottom of the moon on September 7.

The Lander successfully separated from the Chandrayaan-2 orbital vehicle on September 2. After orbiting Earth's orbit for about 23 days, the spacecraft began its journey to the moon on August 14.

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