How Radio Astronomy Map Created - Activity
Radio telescope is used on scanning the sky or particular object of interest.
The object of interest could be galaxy, supernova remnant, blackhole etc.
For each point in of the sky or of a objects its signal strength is measured.
Scanning & signal strength is done at specific frequency.
The output of scanning activity is table as shown below
Data credit- https://www.gb.nrao.edu/epo/dsheet1.html
when the signal strength (values) in above table are colored such that "0 value" will have low intensity color and "6 value" will have high intensity color or vice versa. Or specific values are given specific color.
This will result in very interesting radio image as shown below
Above image is created in excel by apply conditional formatting on the frequency signal value table
To know more read the below link.
https://www.gb.nrao.edu/epo/image.htmlBelow translation in Portuguese is done by Elaine ( Teacher from Brazil)
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