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10.1'' reflector 115 x Pale bluish-green colour, very large, very loose core. A bright knot appears in the North side (bottom-left), with a smaller knot on the South side; this roughly corresponds to a central "bar" described in Burnham's Celestial Handbook. North at 7 o'clock, East at 4 o'clock |
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10.1'' reflector Mallincam DS432cTEC Exposures = 2.5 sec, Gain = 30/250, Live Stacked frames = 20 This image is in the same orientation as the previous sketch, providing a slightly wider field of view. The stars of M4 have a reddish-tinge even with saturation reduced on the Mallincam; according to Burnham's, M4 is surrounded in a dark nebulousity that reddens the star colours. The central bar (10-12 stars) running vertically through the core that was previously mentioned is very obvious in this photo. M4 is one of the closest globulars to us, about 7200 light years away. North at 7 o'clock, East at 4 o'clock |