Aditya will send pictures of the sun in one day to surprise us all..!?

Sekar Chandra
The main payload of the Aditya-L1 solar observatory is the WELC or Visible Emission Line Coronagraph. Countless photos of this payload are sent to ISRO's ground stations every day. It requires a lot of computing power to process and analyze it. Aditya L1, India's first solar observatory satellite to study the sun, will be launched tomorrow from Sriharikota on a PSLV-C57 rocket. isro has made all preparations for this and after four months of journey Aditya L1 will reach its destination Langrej Point 1 or L1 Point. From then its real work will begin. Every day it starts collecting massive amounts of data from the Sun. According to information provided by isro, Aditya L1 is expected to start collecting and transmitting data from people in 2024. The most important payload or device on the Aditya L-1 spacecraft is called the Visible Emission Line Coronagraph or VELC (VELC). Once operational, it will send a total of 1440 ultra high resolution images of the sun to the isro office in Bangalore every day.


The Visible Emission Line Coronagraph (VELC), developed by the indian Institute of Astrophysics (IIA) at Koramangala, Bengaluru, is capable of continuously observing the Sun's corona from a critical vantage point known as Lagrange Point 1 (L1), about 1.5 million km from Earth. According to professor Ramesh R, principal officer of the VELC payload, the coronagraph is precisely designed to capture an image of the sun every minute, collecting a total of 1,440 images every day. "With this much data, the isro ground office should be ready to process these images in real time and share them with isro after 24 hours so that the data is disseminated to the scientific community and the public," he said.


Enormous computing power required: isro and IIA need enormous computing power to process the images of the sun that velocate every day and analyze and study its data. Prof Ramesh said that rigorous testing of all software components has taken place to ensure seamless data management. “All the software is being tested so that with minimum overlap time the spacecraft data will be downloaded at the indian Deep Space Network at Balalu from where they will process the L0 data [Level 0] data and send it to the Payload Operations Team. The center at IIA will process these images within 24 hours and send them to the indian Space Science Data Center for transmission,” it said. VELC is the most important payload on the Aditya-L1 observatory and there are 6 other payloads. All these work around the sun for 5 years.




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