Abstract
Up to the end of the Middle Ages, the most important means of observation in astronomy was the human eye. It was aided by various mechanical devices to measure the positions of celestial bodies in the sky. The telescope was invented in Holland at the beginning of the 17th century, and in 1609 Galileo Galilei made his first astronomical observations with this new instrument. Astronomical photography was introduced at the end of the 19th century, and during the last few decades many kinds of electronic detectors have been adopted for the study of electromagnetic radiation from space. The electromagnetic spectrum from the shortest gamma rays to long radio waves can now be used for astronomical observations.
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Karttunen, H., Kröger, P., Oja, H., Poutanen, M., Donner, K.J. (2017). Observations and Instruments. In: Karttunen, H., Kröger, P., Oja, H., Poutanen, M., Donner, K. (eds) Fundamental Astronomy. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-53045-0_3
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DOI: https://doi.org/10.1007/978-3-662-53045-0_3
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