Astrophotography by David Gares

Globular Cluster M15

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M15 is possibly the densest globular cluster in the Milky Way galaxy.  The core of M15 has undergone "core collapse".  M15 also contains a planetary nebula near its center called Pease 1, a rare occurrence among globulars.  The brightest stars in this globular are 1000 times brighter than the sun, and the total luminosity of the cluster equals 360,000 suns.  That's a huge amount of energy!  The image below turned out very well; I can barely see this object visually in my telescope because of light pollution.

Globular Cluster M15
(Click image to enlarge)


 Object Details:  
 Type:  Globular star cluster
 Constellation:  Pegasus
 Distance:  33,600 light-years
 Diameter:  175 light-years

 Upper Image Details: 
 Date:  Sept 19, 2015
 Site:  Harahan, LA
 Exposure:  CCD, 5 x 3 min.
 Filters:  IDAS LPS V4 48mm
 Processing:  MSB Astroart 5.0
 Telescope:  4" Tak FSQ-106N
 Reducer:  None (f/5.0)
 Image CCD:  SX Trius 694C Color
 Guide CCD:  SX  MX7C (w/ Barlow) 
 Guide Scope:  AT66ED, ScopeStuff TBSX

 Lower Image Details:
 Date:  August 7, 2004
 Site:  Harahan, LA
 Exposure:  CCD, 7 x 2 min.
 Filters:  Orion SkyGlow LPR
 Processing:  MSB Astroart 3.0
 Telescope:  10" Meade LX200
 Reducer:  Meade, f/4.3
 CCD:  Starlight Express MX7C
 Autoguider:  S.T.A.R. 2000

For more on globular clusters, see my M13 (Hercules) Globular Cluster page.