M71

外部連結
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• [http://messier.seds.org/m/m071.html Messier71 @ SEDS Messier pages]
• [http://gclusters.altervista.org/cluster_4.php?ggc=M+71 Messier 71, Galactic Globular Clusters Database page]
• [http://www.perseus.gr/Astro-DSO-NGC-6838.htm Messier 71, LRGB CCD image based on two hours total exposure]
• [http://www.spacetelescope.org/images/potw1018a/ Messier 71: an Unusual Globular Cluster] , ESA\Hubble picture of the week.

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