M4 Globular Cluster in Scorpius
Orion 8" f/4 Astrograph

 
 This
            superb 5.4 magnitude globular in Scorpius displays a nice collection
            of blue and golden supergiants in its mix. Half a degree across,
            its brightest stars are around 10.8th magnitude. A distinct bar
            of stars crosses its center.
 

            


            
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Optics:  8" f/3.9 Newtonian Astrograph w/Baader MPCC Coma Corrector
Platform:  Homemade GEM with Byers Starmaster Drive 
Camera:  Hutech Modified Canon XTi @ ISO800
Exposure:  3 x 5m
Location:  Happy Jack, Arizona
Elevation:  6850 ft.
Sky:  Seeing  8/10, Transparency 6/10
Outside Temperature:  45F
Processing Tools:  Photoshop CS2, Images Plus 3.82
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