Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 3  ·  NGC 5272
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M3, Roberto Marinoni
M3
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M3, Roberto Marinoni
M3
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Description

Globular cluster M3 is visible in the northern constellation Canes Venatici (The Hunting Dogs).

It is formed by about 500,000 stars and has a distance of about 33,900 light years from the Earth: its apparent magnitude of 6.2 makes it visible to the naked eye under a dark sky.

In this image, individual stars are difficult to distinguished in the densely packed core, but colors are apparent for the bright stars on the cluster's outskirts. M3’s many cool "red" giant stars take on a yellowish cast, while hotter giants and pulsating variable stars look light blue

(text adapted from APOD).

This image was taken from my home terrace with a very heavy light pollution all around.

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M3, Roberto Marinoni

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Astrofili Dalai Lama
Imagers of Italy