Celebrating the Beauty of the Night Sky
MN
M12 Globular Cluster
M12 | Messier 12 | NGC 6218
This globular cluster is about 75 light years across, and its brightest of its 200,000 stars are mV 12, with the brightest 25 stars averaging 14.0 mV. At Class IX it is has a loosely compacted core.


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All Images of M12 Globular Cluster
15 Aug 2015

24 Jul 2014

Details:
Night of:Wednesday July 23, 2014
Site:Palomar Mountain
Local Time:12:15 AM | Jul 24, 2014
Altitude:40°
RA:16h 47m 14s
Declination:-01d 57'
Distance:15,700 light years
Magnitude:+7.7 mV
Size:16'
Camera Settings:
Telescope:9.25-SCT
Camera:Orion Starshoot DSI2 + 0.5x Reducer
f/ratio:f/5
Pixel Scale:1.49 arcsec
Image Size:762 x 568 pixels (0.4 MP)
18.9' x 14.1'
Exposure:10 sec
Stacked Frames:24
Total Integration:4 minutes
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