The results of radio telescopes: spectra, cross-scans and radio maps
What are the results you can record with a radio telescope? In this article you can see spectra, cross-scans and radio maps you can record with SPIDER radio telescopes. When we record a picture of an Universe object, we usually use a digital camera that has many pixels (typically several millions). This way, when we record the picture, the light we receive “lighten” many pixel at the same time and each pixel records light coming from different sky areas. But, when we use radio telescopes, we record the signal from a single area of the sky (only large professional radio telescopes may have more LNA units), just as if our camera had only one pixel.
