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Astronomical survey
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General map or image of a region of the sky with no specific observational target
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Wikipedia

An astronomical survey is a general map or image of a region of the sky (or of the whole sky) that lacks a specific observational target. Alternatively, an astronomical survey may comprise a set of images, spectra, or other observations of objects that share a common type or feature. Surveys are often restricted to one band of the...

Subclass of
survey
Astronomical catalog
Analysis
Part of
Astronomy
References
Wikidata