Celebrating the Beauty of the Night Sky
Globular Cluster
M3 | Messier 3 | NGC 5272
With 500,000 stars, at 180 light years diameter, this is one of the biggest and brightest globular clusters. Its brightest stars are mV 12.7, and its overall spectral type is F2 (yellow-white), with a secondary population of blue stars. At Class VI, its core is of medium density. The brightest 25 stars average 14.2 mV.

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All Images of Globular Cluster
29 Mar 2017

11 Feb 2016

30 Mar 2005

21 Apr 2004

Night of:Wednesday March 29, 2017
Site:Laguna Niguel
Local Time:11:50 PM | Mar 29, 2017
RA:13h 42m 12s
Declination:+28d 23'
Distance:33,900 light years
Magnitude:+6.2 mV
Camera Settings:
Camera:Celestron NightScape + f/6.3 Reducer
Pixel Scale:1.45 arcsec
Image Size:995 x 843 pixels (0.8 MP)
24.0' x 20.4'
Exposure:15 sec
Stacked Frames:31
Total Integration:8 minutes
Post Processing:processed using flats
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