Tuesday, 3 November 2020

Dr. Vikram Sarabhai and the vision of the Indian Space Program

 

Dr Vikram Sarabhai and the vision of the Indian Space Program



ISRO is set to launch its latest earth observation satellite EOS-01 and nine international customer spacecraft onboard its PSLV-C49 rocket from the spaceport of Sriharikota in Andhra Pradesh on November 7. With the growing popularity of ISRO’s work, Indian citizens are not only proud but have developed a keen interest in the Space Program. Ahead of the launch let's discuss the man behind this organisation. 


Vikram Sarabhai was born on August 12, 1919, at Ahmedabad in an affluent family of progressive industrialists. He was one of the eight children of Ambalal and Sarla Devi. He had his early education in a private school, ‘Retreat’, run by his parents. Eminent personalities like Gurudev Rabindranath Tagore, J Krishna Murthi, Motilal Nehru, VS Shrinivasa Shastri, Jawaharlal Nehru, Sarojini Naidu, Maulana Azad, CF Andrews, C V Raman used to stay with the Sarabhai family when they visited Ahmedabad. Mahatma Gandhi also once stayed at their house while recovering from an illness. Visits by such great personalities greatly influenced Vikram Sarabhai. Interestingly it was Rabindranath Tagore who wrote his recommendation to Cambridge. Dr Sarabhai proceeded to Cambridge for his college education. 

 

At the beginning of World War II, he returned home and joined as a research scholar under Sir CV Raman at the Indian Institute of Science, Bengaluru. His research  interest in solar physics and cosmic rays led him to set up many observation stations around the country. He built the necessary equipment and took measurements at Bengaluru, Pune and the Himalayas. He returned to Cambridge in 1945 and completed his PhD in 1947.

Dr Sarabhai was the founder of many organizations, to name some:


  • Physical Research Laboratory (PRL), Ahmedabad

  • Ahmedabad Textile Industry's Research Association (ATIRA)

  • Indian Institute of Management (IIM), Ahmedabad

  • Community Science Centre, Ahmedabad

  • Darpan Academy for Performing Arts, Ahmedabad (along with his wife Mrinalini Sarabhai)

  • Vikram Sarabhai Space Centre, Thiruvananthapuramm

  • Space Applications Centre, Ahmedabad (This institution came into existence after merging six institutions/centres established by Sarabhai)

  • Faster Breeder Test Reactor (FBTR), Kalpakkam

  • Varaiable Energy Cyclotron Project, Calcutta

  • Electronics Corporation of India Limited (ECIL), Hyderabad

  • Uranium Corporation of India Limited (UCIL), Jaduguda, Bihar


He passed away on 30th December 1971. Years after his death, in 1975 the first Indian satellite Aryabhatt was launched by Kosmos-3M from Astrakhan Oblast.

References

1. K. Kasturirangan, ‘Vikram Sarabhai as I knew
2. Amrita Shah, Vikram Sarabhai- A life, Penguin Books Ltd, 2007

Saturday, 11 April 2020

How to download Declassified CORONA data from USGS?

What is CORONA data?

The images from Corona are a useful tool to study landscape as it gives a representation of the study area from the 1960s and 1970s, that is, before the time mechanized means were used for changing land cover. Thus tracing out archaeological features in Corona data is easier when compared to recent satellite data due to the subsequent land cover change. The Corona program was conceptualized by the United States of America in 1958. After World War II, both USA and USSR entered a stage which is commonly known as the Space race. The Corona program was thus conceived by the USA for military surveillance. These images from Corona are high-resolution images (up to 3m) covering large areas and captured by panchromatic cameras (Dashora 2007). The images were captured
from 1960 to 1972 and can be used for any application including archaeological exploration. The
data from CORONA declassified and made public in three parts (Declass-1 in 1995, Declass-2 in 2002 and Declass-3 in 2013), which can now be accessed from Earth Resources Observation and Science (EROS) website. 

Register, login and download data.
1. link to USGS
2. Make an account and sign in.
3. Click on search criteria tab.
  • One can search for a place by typing the Name. For example.: New Delhi India.
  • Now Click on Data Sets.
  • Goto Declassified data.
  • All the data pertaining to the study area will be displayed.
  • You have to choose the best image which is free.
  • and click download.
Next blog will be about georeferencing CORONA data