Gmrt History-01
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* Little * Star * Thursday, Aug 30th, 2007
A huge antenna dish (like the antenna that the cable-operator has on his roof) is moving a top a stationary structure. It is not a mean task for a 45 metre antenna to move mechanically. It is awesome. It is beautiful. Stretching my eyes over the horizon, I see few more antennae - all tilting together searching for a common goal. Located the on the quiet and isolated of Pune, is Khodad (near Narayangaon) where I’m standing.
What I’m watching is the Giant Metrewave Radio Telescope (GMRT) of the Tata Institute of Fundamental Research, the world’s largest radio telescope. It consists of thirty 45-m dishes arranged in a Y-shaped configuration spread over distances of ~25 km. Work on GMRT was started ~ 1989 under The leadership of Prof. Govind Swarup and by 1995, all the 30 antennas were operational. The telescope is being used by astronomers from all over the world to study and learn more about astronomical objects emitting in radio frequencies. GMRT works in the radio regime where the wavelength is of the light is order of a metre (the wavelength of the red light that you see is about a million times smaller than a metre). There are many astronomical objects which emit mainly in the radio wavelengths but only the powerful emitters can be detected since these objects are very distant. One of the science projects of GMRT is to detect hydrogen from very distant galaxies. Hydrogen forms a major constituent of our Universe from which galaxies formed. Atomic hydrogen
emits radio emission at 21 cm. It is believed that the Universe is expanding and the distant galaxies are moving away further from us. GMRT was a huge project, and a lot of research went into it. Interestingly, the wired net used to make the antenna-dishes is an innovative technology by the Indian engineers. GMRT is one of the most challenging experimental programmes in basic sciences undertaken by Indian scientists and engineers. The antennas have stopped moving and started collecting radio waves from the source. And as I retrace my steps back towards the Observatory building, I can feel the pride in my strides.
**Join Group_ “Delta Force” On
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A huge antenna dish (like the antenna that the cable-operator has on his roof) is moving a top a stationary structure. It is not a mean task for a 45 metre antenna to move mechanically. It is awesome. It is beautiful. Stretching my eyes over the horizon, I see few more antennae - all tilting together searching for a common goal. Located the on the quiet and isolated of Pune, is Khodad (near Narayangaon) where I’m standing.
What I’m watching is the Giant Metrewave Radio Telescope (GMRT) of the Tata Institute of Fundamental Research, the world’s largest radio telescope. It consists of thirty 45-m dishes arranged in a Y-shaped configuration spread over distances of ~25 km. Work on GMRT was started ~ 1989 under The leadership of Prof. Govind Swarup and by 1995, all the 30 antennas were operational. The telescope is being used by astronomers from all over the world to study and learn more about astronomical objects emitting in radio frequencies. GMRT works in the radio regime where the wavelength is of the light is order of a metre (the wavelength of the red light that you see is about a million times smaller than a metre). There are many astronomical objects which emit mainly in the radio wavelengths but only the powerful emitters can be detected since these objects are very distant. One of the science projects of GMRT is to detect hydrogen from very distant galaxies. Hydrogen forms a major constituent of our Universe from which galaxies formed. Atomic hydrogen
emits radio emission at 21 cm. It is believed that the Universe is expanding and the distant galaxies are moving away further from us. GMRT was a huge project, and a lot of research went into it. Interestingly, the wired net used to make the antenna-dishes is an innovative technology by the Indian engineers. GMRT is one of the most challenging experimental programmes in basic sciences undertaken by Indian scientists and engineers. The antennas have stopped moving and started collecting radio waves from the source. And as I retrace my steps back towards the Observatory building, I can feel the pride in my strides.
**Join Group_ “Delta Force” On
pdfcoke.com
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