Astrophotography by David Gares

Globular Cluster M4

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M4 is a very loose globular cluster in the southern summer sky.  I was fooled by the brighter stars of the cluster and thus underexposed the image a little.  It pays to know your subject well before you shoot, and I didn't do my homework.  This was a filler image captured while waiting for other targets.  Nevertheless it's a nice shot.

Globular Cluster M4
(Click image to enlarge)

m4.jpg

 Object Details:  
 
 Type:  Globular star cluster
 Constellation:  Scorpius
 Distance:  7200 light-years
 Diameter:  140 light-years

 Image Details:
  
 Date:  April 10, 2004
 Site:  Harahan, LA
 Exposure:  CCD, 9 x 30 sec.
 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