Celebrating the Beauty of the Night Sky
MN
Globular Cluster
M15 | Messier 15 | NGC 7078
M15, at Class IV, is one of the most densely-packed globular clusters, and one of the few known to contain a planetary nebula (Pease 1 or K 848, 15.5 mV and 3' diameter). With over 100,000 stars, this cluster is 175 light years in diameter. It is thought to contain a black hole at its core. Half the cluster's mass is concentrated within the central 1.06'. The brightest stars are 12.6 mV.


Viewing at 66%Full Resolution

All Images of Globular Cluster
24 Nov 2017

24 Nov 2017

09 Jun 2016

01 Nov 2013

05 Oct 2013

20 Sep 2009

Details:
Night of:Friday November 24, 2017
Site:Laguna Niguel
Local Time:6:45 PM | Nov 24, 2017
Altitude:55°
RA:21h 29m 58s
Declination:+12d 10'
Distance:33,600 light years
Magnitude:+6.2 mV
Size:18'
Camera Settings:
Telescope:9.25-SCT
Camera:Celestron NightScape + f/6.3 Reducer
f/ratio:f/6.3
Pixel Scale:1.45 arcsec
Image Size:1816 x 1333 pixels (2.4 MP)
43.9' x 32.2'
Exposure:60 sec
Stacked Frames:48
Total Integration:48 minutes
Shot Info:autoguiding
Post Processing:processed with flats
stacked with AstroArt
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