Astronomical survey | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-27

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Astronomical_survey


00:00:50 1 Scientific value
00:02:22 2 List of sky surveys
00:10:55 2.1 Surveys of the Magellanic Clouds
00:11:17 3 See also



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SUMMARY
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An astronomical survey is a general map or image of a region of the sky which lacks a specific observational target.  Alternatively, an astronomical survey may comprise a set of many images or spectra of objects which share a common type or feature. Surveys are often restricted to one band of the electromagnetic spectrum due to instrumental limitations, although multiwavelength surveys can be made by using multiple detectors, each sensitive to a different bandwidth.Surveys have generally been performed as part of the production of an astronomical catalog. They may also search for transient astronomical events. They often use wide field astrographs.