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 The Cone Nebula and Friends 
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Cone Nebula
S Monocerotis
Trumpler 5
NGC2245 / NGC2247
Hubble's Variable

Cosmic clouds of hydrogen gas and dust abound in this gorgeous skyscape, stretching through Monoceros in the neighborhood of The Cone Nebula. A dark, obscuring dust cloud, the simple, sculpted shape of the Cone Nebula is near the lower left edge. Surrounded by the red glow of hydrogen gas, the cone points , toward bright, blue-white S Monocerotis, a quadruple system of very massive, hot stars. S Mon itself is also surrounded by intriguing red emission nebulae characteristic of star forming regions, expansive dark markings on the sky are silhouetted by a larger region of fainter emission. Yellowish open star cluster Trumpler 5 is picture centered, with the striking blue reflection nebula, IC 2169 on the top left . The curious compact cometary shape near the cone nebula on the right upper is Hubble's Variable Nebula. [Text adapted from APOD]

Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: Canon 5D MkII - Baader Mod
Filters: OSC
Guiding Systems: Tecnosky 60/228 Guide Scope- SX Lodestar
Dates/Times: 20-22-23 December 2014
Location: Pragelato - Turin - Italy
Exposure Details: OSC => 90 = > (18x5) ISO 1600 [num x minutes]
Cooling Details: Ambient -4C
Acquisition: BackyardEOS, TheSkyX
Processing: PixInsight, PS CS5
Mean FWHM: 3.65
SQM-L: 20.98 / 21.11