How is a radio signal turned into an image?

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Radio astronomy involves converting signals from distant celestial objects into visual representations. This process can include shifting normally invisible light waves into the visible spectrum or graphing the activity of galaxies. Additionally, it may involve comparing the received radio waves with known patterns from observable stars to create images based on similarities and differences. The exact method of image creation can vary depending on the type of data being analyzed. Understanding these processes is essential for interpreting the visual output in radio astronomy.
Matt Jacques
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Im not talking about TVs, but radio astronomy. We receive signals from say a distant star and turn it into a picture, but how?
 
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Well..I'm not sure what kind of picture you are talking about. Sometimes it's just light waves that are normally invisible that are moved up or down the spectrum so that they are visible...sometimes I'm sure they just graph activity of a galaxy...It also could be a case where the information on light waves (I say light waves because not all waves are in the radio spectrum) is compared to the patterns of light waves coming from stars we can see, and produce an image based on the likenesses and differences.

Ultimately, I'm not sure what kind of picture you are talking about.
 

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